Customer Testimonials about CRC Products

I am so pleased with your product Marykate On&Off hull cleaner. I just bought two other brands of hull cleaner (at the request of the clerk) and they both had as much cleaning power as plain water. I then went back and asked if there was something more powerful and he gave me On & Off. As you can see in the picture it was literally like magic. The hull has never been so white since the day I brought it home.

I wanted to tell you my story about how your product – Guaranteed to Pass Emissions – helps our family and our environment. My 1996 Ford Explorer XLT has 242,000 miles on the odometer and is gracefully aging. We always use your product to clean our automotive system and pass emissions for our license tags. This year was no exception, and after running a tank treated with CRC Guaranteed to Pass Emissions, I took my SUV to the testing station. The station attendant tested my car and then spent 10 minutes looking at the undercarriage and engine compartment, I asked him what he was looking for and he told me he was looking for the bypass. I told him I didn’t have one on the vehicle and I just used your product. The car passed so low, he thought I had welded in a bypass to reduce the tailpipe emissions. That is testament enough for anyone that your product works so well for those of us driving “senior citizen” automobiles. Thanks for your great product. It keeps our vehicle running clean and protects our environment, while saving my family money.

Marine 6-65 is the greatest stuff on the planet. I had 18″ of water in my basement over the weekend. Power tools, washer, dryer all got wet. I was pouring water out of power tools. A friend gave me a can of 6-66 about 25 years ago and said it was great stuff. I hosed down all my tools, wiped dry and they all worked. My air compressor was floating upside down, works after 6-66 sprayed on. My dryer was DEAD, sprayed motor with 6-66 …. works.Same with washer. I recommend keeping a can on the shelf.

fairly easy to use, simple tools to clean the MAF and intake/TB. I used it to help my 2001 Impala pass smog test.

flows into crack where you want lubricant, sticks to what you want to lube, and doesn’t wash off.

I was told that I had an EGR circuit problem that keeped me from passing DMV insp.A bottle of this product and 150 miles later,the ck. eng. light went off and all was well and passed insp.That was two yrs. ago and all is still well in the circuit.I recomend this product a least once a year.

97 Cougar threw a P0174 code which says bank 2 too lean. Car also kind of sluggish with the V6, step on gas it hesitates then slowly gets moving. Checked online and common problem for this code is a dirty MAF sensor. Tried this cleaner first and it worked like a charm. Car accelerates better with no hesitation now. Great product! Try this stuff first before replacing the expensive MAF sensor.

This is the only Mass air flow sensor cleaner I use on my vehicles. I try to clean my mass air flow sensor along with the throttle body every 6 months. If used frequently it will prevent HP decrease, fuel economy decrease, and torque loss.

Got the same code problem for the MAF sensor on my 99 Ford Explorer. Used this product to clean it up and sure enough the code cleared and got a modest improvement in mpg.

Make sure you spray the MAF sensor really good a couple of times. Even if your MAF looks clean it is not until you spray it with this. I noticed definitely better throttle response and will know in a week or so if my gas mileage improved.Only downside is this stuff cost me about[$]a can. Pretty spendy, but since you don’t have to do this often it’s worth the cost.

The product cleaned the deposits off of the map sensor. Not sure if there is any benefit on gas mileage or performance yet. Good preventative maintenance step.

Works fast and effective on cleaning MAF’s. My Silverado 2500HD 6.0 was giving me a bad MAF code & I cleaned it, gave it about 30 minutes(it was a windy day) just to be sure it was all dry, put it back in and it was cleared. Truck now accelerates smoother & quicker.

I had the maf and ho2 sensor error codes. After doing some research I had read that the maf may be dirty especially since I have a K&N air intake and filter unit installed. It seems,for whatever reason that the maf sensors get covered in the K&N oil and actually get coated with dirt easier. Picked up a can and an hour later the 350 has recovered its power,pick up and acceleration. After the road test,I returned home,hooked up the OBD II,cleared the codes and ran a diagnostic. PASS! This product had definately found its place in my maintenance regimen. Thank you CRC and Advance!

Cleans all the dirt and dust out.fast drying.

I had a CEL come on after cleaning my air filter and assumed I might have gotten some debris on the MAF sensor. Bought a can of this and it took care of my problems. Easy fix.

CRC products may cost more,but you get a better value for your money,as they work much better than cheaper brands.

it really cleaned up the sensor and honeycomb

Cleaned up my MAF sensor very easily even though the sensor was very dirty. Car runs great now.

It’s pretty effective for electronic cleaning. Straight alcohol works too and is a little cheaper.

Pleasant suprise – they were out of my regular brand and this stuff worked great.

excellent product

Worked well to clean brake parts.

worked great to clean my starter and alternator while they were out. evaporates quickly to prevent the electrical components from messing up.

Used this on a 1999 Nissan Maxima. I put new belts on this car about a year ago. The main belt has been squeaking on start-up on and off since. Tightening the belt would work but I was nervous about over-tightening. This car has had a very slow oil leak for years and I think the belt has been getting contaminated. This CRC Belt Conditioner worked perfectly. It made the belt tacky and completely eliminated the squeaking/chirping at startup. Also you get a lot of conditioner (7.5 oz) for a low price which is great. I have been working on cars for more than 20 years and feel good about this product.

works real good helps to quiet the pads down from squealing all the time

I have changed quite a few pads/shoes over the years, but i had never used brake quiet before…..decided to try it in hopes of keeping the pieces from rusting/sticking and breaking down. the jury is still out at this point. advice is to spray the pads (the metal parts, not the actual pads) before you are ready to install b/c they need time to dry. CRC is a good brand as well.

Bought this ‘just in case’ to hopefully eliminate any possible squeaking on my new brakes. So far, there are not squeaks, so I don’t know if it wouldn’t have had any, or if this is doing it’s job. Either way, cheap insurance.

I try to clean my throttle body and mass air flow sensor at the same time every 6 months. This throttle body cleaner does the job quite well at removing grease and other containments that can be lodged inside the throttle body chamber. Use a clean rag or Q-Tips to clean in the corners when the butterfly is shut. This can be sprayed into the throttle body. Make sure to get the containments behind the butterfly. When starting your vehicle, its common for the engine to run sluggish right after throttle body cleaning. Give the engine a couple of revs up to 3,000rpms. Also let the engine idle for about 5 mins to ensure that is running okay. CRC throttle body cleaner works just as well if not the same as its competitors.

works great. i started having problems with my yukon idling rough and cutting off after i replaced the air filter with a k&n. i used the crf to clean the throttle body and it solved the problem.

Love it, my wifes 04 corolla was having high idle issues, and some rough idling, now its smooth and gas pedal response is better.

Just wanted to say thanks for marketing a GREAT product. On 10/18/08 my 1993 Toyota Previa failed it’s smog test due to high NO levels measured at 623. I bought your product, Guaranteed to Pass, followed the instructions and was tested again on 10/25/2009. This time the NO measured at 413, easily below the maximum allowed of 508. You also have fantastic customer service. I will recommend this product at every opportunity. Thanks again.

My name is Michael Pakosta and I live in Volo, Illinois. I have a 1993 Ford Ranger that has 225,000 miles on it. The truck is in good condition and runs great. A couple of weeks ago, I was told I had a leak in the front block gasket on my truck. I was losing coolant sporadically and the leak appeared to be getting worse with time. That was not good news for me because, financially, I could not afford to fix the gasket (estimated $1200-$1500) and I was not ready to part with this old truck just yet. I went to Walmart about a week ago to purchase more antifreeze and saw the K&W Block Seal can on the top shelf. I never heard of this product. So, I thought I had nothing to lose and purchased it. I followed the directions exactly that same day on my truck. I still cannot believe it, BUT IT WORKED. My block dried up and currently, I see no apparent leak in that area. I cannot believe it. I even told my wife that if this $8 can of gunk works, I’ll take her out to dinner @ our favorite restaurant. Dinner was great by the way….. I just wanted to thank you for selling a product that actually worked better than I truly expected. I wish you and your company continued success. Thanks again

I drive a 1992 BMW 325i it has gone 190,000 miles….runs and looks great. I had high HC’s on my state emissions test. Since I am in aircraft maintenance. I have always done my own automotive repairs and I do enjoy it. The High HC’s was a puzzle……..the engine and emission components basically checked out ok. I took the car to a BMW expert….same results……could not locate the problem….. I added CRC emission formula as directed. Took the BMW through the Emissions test and ……..with flying colors it passed………..Just wanted to tell my little story and let you folks know about it…… Thanks for a great product at a reasonable price.

Dear CRC: This is a Great Product. I just returned home to Canada from Indianapolis. It is a 10 hour drive and over 570 miles. I was in Indy Drag RAcing and Road racing my 73 455 Trans AM. I drive it to and from the track so I was in a bind when I blew a head Gasket. There was water in the oil and blowing the mixture out the breather. I had to add a far bit of water just to get it back to the Hotel. I dropped into the local NAPA dealer and he told me to try your product, Nanotechnology Permanent Head Gasket & Block Repair. I changed the oil and Filter (What a Mess) and followed the instructions on the bottle. Left the car sitting overnight then flushed the system and headed home. The trip was 10 hours and it didn’t use a drop of water. I really didn’t think it was going to work. I have never seen the product on the shelves in Canada . Is it available in Canada? After this I would keep a bottle just in case. Thanks for a GREAT product it saved my bacon.

Hello, my name is Merle Peters. I bet you normally don’t get too many emails regarding your products that are positive, but this is one of those such letters! I live out in the state of Washington and I have a 1993 Honda Civic with 299,877 miles on the speedometer. These are original, hard driven miles that I personally have put on it. Recently my car started to show signs of a blown headgasket and was in the beginning stages. You know the signs, white smoke, overheat, and all the normal signs and oh yes, not to forget, the pressure test that failed! After having a mechanic check it out for me and quoting me a price of over $400.00 plus, I decided to try one of the products out on the market for a lot cheaper price than what He quoted me. I went to my local Schucks Auto parts store and looked on the shelf of all the different types of products that claim to fix the problem. What struck my eye about your product, was that it said on the bottle, NANOTECHOLOGY, PERMANENT HEAD GASKET REPAIR! Boy this was just what I needed! I rushed home from the auto parts store, like a new kid in a candy store and couldn’t wait to see if this was the fix all product that was advertised! After giving very close attention to all of the directions, I set out to take a new journey on repairs. After following all the directions to the letter, with the draining, flushing, re-flushing and then the additive, and letting it sit over night with the radiator cap off and the radiator drain plug out, then the next step of re-flushing and installing of new antifreeze, I proceeded to go on my marry little way. After having use other products in the past, I was very skeptical of this product ever working. As I headed down the highway, with one eye on the road and one eye on the temp. gauge, I couldn’t believe the smooth run of my little Honda. No heating up anymore, no overflows, no nothing! Wow, I guess this product finally did the trick. After driving it for another 15,000 miles and still holding, I just couldn’t wait to write to your company and let you know, that you have really hit the mark on this one! Your advertising of this product really did catch my eye and the way this product works, I am one HAPPY CAMPER! I just wanted to let all of you folks that work in this industry, how well this product is and I plan on going on my own little crusade of advertising this wonderful, money saving product to who ever will listen! I personally could not wait to go back to my mechanic to let him know, that he would not be seeing my $400.00 anytime soon and to use my spot in his shop for someone else! In closing, I want to personally give my most heart felt thank you!

I just wanted to say feeze off is the best. I went through a hole can of pb blaster to take a hub off but it didnt work I went to babcocks in my home town in beaver dam wisconsin and they told me about freeze off and it came off really easy.

Good Morning, My name is Larry Young. I live in Fenton, Missouri and I purchased your product Trans-X Automatic Transmission stop leak for my daughter’s car, an 89′ Cutlass Cierra which she now uses at college. You have saved me untold expense and inconvenience, and I thank you very much. I am widowed and raising 3 teenagers, my daughter Autumn who is in college and two younger boys. I’m doing my level best to give them everything they need. You have helped me with a major worry, and that should never go unacknowledged. I have many things to deal with in raising and providing for these children, but you have allowed me ease to work on other problems. Being suspicious of the price as being more inexpensive than the others, I took you at your word and hung onto the receipt, that if it didn’t work I could get a refund. I see that your confidance in your product is justified. It works great!!!! This makes TWO products that I can believe in —- yours, and Aleve, which also does what it says. Thank you so very much!

I WAS LOOKING ON YOUR WEB SITE TO BLOG THIS INFORMATION BUT HAD TROUBLES LOCATING THE BLOG SECTION. PLEASE PERMIT ME TO INTRODUCE THE CRC EMISSION CONTROL TEST FORMULA EXPERIENCE TO THE CUSTOMER SERVICE AND MAYBE YOU CAN BLOG IT FOR ME. THE HYUNDAI ACCENT 1999 4 CYLINDER 2/DR 5 /SPD STANDARD TRANS WAS REQUIRED TO TAKE A TEST ONLY SMOG CHECK THIS CONCERNED ME DUE TO THE FACT THE CAR WAS WELL OVER 230K MILES AND HAD BEEN HIT IN THE REAR END TWICE. I WENT TO A PASS OR DON’T PAY SMOG CHECK AND FAILED THE FIRST CHECK. WITH THE REQUIRED PPM OF 499 TO PASS ,THE CAR TESTED AT 556 PPM .SO I DID THE FOLLOWING THIS IS A FRONT WHEEL DRIVE UNIT AND THE DYNO TEST WILL SHOW HIGHER READINGS WITH LOW TIRE PRESSURE I ADJUSTED THAT AS NEEDED .CLEANED THE AIR FILTER, CHECK THE PVC VALVE, AND VACUUM HOSES ,CHANGED THE SPARK PLUGS, FILLED THE TANK WITH A HI OCTANE FUEL, AND ADDED YOUR CRC PRODUCT. RAN THE CAR BACK AND FORTH TO WORK 80 MILES ROUND TRIP AND TWO DAYS LATER I TOOK THE CAR DOWN FOR A SECOND TEST .THE TEST RESULTS WERE 460 PPM PASSING THE CHECK ONLY REQUIREMENTS . SOME OF THE BLOGS ABOUT THE CRC I READ ABOUT GAVE ME REASON FOR CONCERN .BUT THE TRUTH OF IT ALL WAS I REALLY NEVER SAW THE CAR ACT BAD AFTER THE CRC WAS ADDED THE ONLY THING I REALLY NOTICED WAS THE VEHICLE STARTED ACTUALLY RUNNING BETTER AND GETTING A LITTLE BETTER GAS MILLAGE ANYWAYS I AM SURE BY ADDING YOUR EMISSION TEST FORMULA CRC GUARANTEED TO PASS CRC PRODUCT DID ITS SHARE IN HELPING

I would just like to say a few things. I use to use your product for many years and then I could not find it anywhere. It use to be in a brown can, now it’s red. I was looking through a fly-er of Ace Hardware about a year ago and there it was, I was so happy. I let may people know about your product and many of them remember it also but also don’t know what happened to it. Now they also no they can purchase it at Ace. The reason I am sending this e-mail is that I think you should advertise on the T.V and I believe it will sell very well. Just a short message like “where back”. Just finished using it on my leather jacket and shoes. Makes shoes look like new. Maybe I’m nut but I think you should get the word out. I’m just so glad that I found it again, and so are many of my family and friends. Like I said I found it a year ago and just used it today is what made me think of the T.V.ad . I really do believe it will increase sales. Anyway thanks for the great product and don’t stop making it again if you did before.

I used your K&W Head Gasket & Block Repair, and it worked. I had a very large leak between the head and the intake manifold; it would have cost $800.00 to repair. I was at the Auto Zone yesterday, and the store manager said your stuff would fix my problem. For $20.00 I took a chance, and WOW am I happy, I have been driving my car all day today. Is it really “permanent, will continue to be happy? Thank You, Thank You Thank You.

Just to let you know, this product makes an excellent firearms cleaner. You should look at getting into the gun cleaning market especially with Cowboy Action Shooters. Our guns are used heavily and we are always looking for a quicker clean-up. I use it on my firearms and turned a friend onto it to use on his black powder guns. He said it cleans his guns faster than anything he has ever used. It melts away the powder residue and he is really pleased with the results. It leaves a light oil film to help protect the guns while in storage. Firearms pretty much generate the same compounds of combustion as engines so this product is a perfect fit. I use it to clean my AR-15 and semi pistols also. I have not had any problems and don’t see anything that would be detrimental to the firearms. If you believe there is something I am not aware of that could be a problem, please let me know.

hi i rarely believe wild claims about what a fuel additive can do for me….BUT i tried your product in my e-class benz (two years ago at inspection i was at the max for hydrocarbons) i used as directed AND I PASSED!!!!!!!!!! i will reccommend this product to everyone i know. how nice in this day and age that something works as advertised. thanx again, russ masneri

You saved my rotary engine TWICE. This stuff should be marked for Rotaries. My oil control seals are old. Stopped my engine from smoking.. BEST STUFF EVER.. Nothing compares Last year it smoked too. i put some of this in there and No smoke for 10-12 months. Amazing stuff. TY

97 Cougar threw a P0174 code which says bank 2 too lean. Car also kind of sluggish with the V6, step on gas it hesitates then slowly gets moving. Checked online and common problem for this code is a dirty MAF sensor. Tried this cleaner first and it worked like a charm. Car accelerates better with no hesitation now. Great product! Try this stuff first before replacing the expensive MAF sensor.

Good evening: You probably have heard of this before, but I used your Brakleen in a pinch vs. a wasp nest and came out completely victorious! The wasps dropped like flies (pardon the pun!) and were dead in a matter of seconds.

I have had stains on my boats hull and I must tell you that it is the most amazing product I have ever used. I tried bleach, Scrubbing bubbles, even Easy off over cleaner to try and get the stain off my boat, and just happen to luck up on MaryKate On and Off hull cleaner. I have the number one Bass site on google and I have sent the story in about your product so all my 20,000 readers will follow my advise and pick up some for their boat. I always tell my readers don’t buy it until I try it and this is a product I stand behind 100% great job, and thanks for saving me time on scrubbing my hull. 

Good Morning, a few months ago I added a bottle of Transx to my daughters 2002 Honda Civic when I changed the transmisson fluid. the Civic just turned 100k miles. about 4k miles later the transmission went out and her stranded on the highway, a total trans rebuild by Aamco stating the cluthes came apart. I thought this was very unusual for Honda transmission, I was not having problems before but it was suggested to add the trans-x for added protection, Honda brand transmission fluid was used. Thanks

Dear Folks at CRC. I have a 2000 Mercedes Benz C280 sport with a 2.8 engine. It was running rough and kicking codes all the time.It even kicked false misfire codes.Thank you so much for such a wonderful product.You have saved me hundreds of dollars! For a small investment of $7.96,my Benz runs like new!I was told by Mercedes that it would cost $200 just for a new sensor.

hello,i been a fan of your products for many years because of my grandpa and dad.last year i purchased a 2005 toro commercial walk behind mower and was going to use it on a customers lawn before a engine overhaul was to be done for a winter project.the grass was so thick that poor mower smokelessly burned off all its oil and seized the connecting rod, making the overhaul happen much sooner (and $300 more expensive).then came the epic battle between me and the stuck blade adapter from the factory they never put anti seize on the crank to keep it from rusting on to the shaft.my first attempt was to pry it off that didn’t work i drenched it in JB80….that was a $11 joke.i soaked it in the motors own oil to see if that would do it.that didn’t either.so me being forgone ticked i decided to try your freeze off penetrating oil just today i soaked it in the freeze off,left to get some tools,came back and the puller eased the blade adapter off then i noticed that the CRC litterely split the blade adapter off from the crank, something I’ve never seen before.then i noticed that there was a pulley that looked rusted on the shaft also i soaked it again with the CRC,left to get more tools,came back and pulled it off with my hand. I’m now going to stock up on your freeze off,carb cleaner (now that i found a store that carries it) and anything else you guys make.thanks for making a product that i can be proud to show off now i can get a $1,500 walk behind mower back in action and get it mowing this year!

I recently purchased and used your “Guaranteed To Pass” additive after failing an emissions test. Although I did not pass after using your product, I will NOT be asking for a refund. Here is why: My vehicle was well over the allowed amounts for Hydrocarbons and Carbon Monoxide- About 5x over on each. After using your additive my hydrocarbons dropped from the 900′s to 250- only 30 over the allowed amount. My Carbon monoxide emissions were cut in half, going from 13.xx to 6.xx. In a vehicle that was not so far out of tune as mine this additive would have made it pass with flying colors. Aside from the reduced emissions I have noticed the following: A smoother idle, Dramatically decreased bucking under mid to high rpm acceleration Increased fuel economy A very noticeable increase in power. This was quite easily the best $10 I have ever spent on a fuel system cleaner.

WOW!! LOVE THIS PRODUCT. HERE IS MY EXPERIENCE. 1995 FORD TAURUS. IN THE PAST IT HAS PASSED WITH FLYING COLORS. THIS YEAR IT DID NOT PASS. I ADDED 12OZ GUARANTEED TO PASS TO 16 GALLON TANK. DROVE A LITTLE OVER 150 MILES. USED A LITTLE OVER 1/2 TANK OF GAS. FILLED TANK AND WENT IN FOR REINSPECTION. RESULTS ARE REMARKABLE. THANKS FOR YOUR GREAT PRODUCT!

Thanks to your “Emissions Test Formula” gas additive my 1989 Honda with 176,000 miles passed the Oregon DEQ test today. It failed the test three weeks ago so I changed the oil, added your product, drove the vehicle to empty, got a fill then passed the test. If I had failed the next step would have been the inconvenience and expense of a new catalytic converter.

I hope you guys fully understand just how great your product is and how much it really helps the little man in todays world. I bought a used Chevy Blazer and found out it had a blown head gasket and trying to make ends meet now days is hard enough . The repairs would have been around a thousand bucks or more ,no way could i afford that.I got on line and started seeing different people talking about your product .The truck was using about a gallon a day of  water ,had to use just water ,antifreeze way to much money to pour straight on ground . There was three leaks on the drivers side ,so bad that it would pour out on the floor when i was pouring it into the radiator and the truck was not running .I used your block seal and just like the instructions said within 20 to 30 minutes it totally stopped leaking and the exhaust dried up .I have been driving it for about 4 months now and i check my radiator level and it has not gone down one bit ,no over heating ,no antifrezze smell ,the truck is great now . Thank you so very very much.

I would like to let you know of how your product helped me out in a repair. I fixed an iPhone 3G with various problems up to working condition, and used it for about a month, but after a while the touchscreen stopped working in certain places. Frustrated, I bought another touch screen, installed it, and nothing changed. I then used your QD Electronic Cleaner on the connection, put the phone back together, and it works! I was almost in denial at how easy it was–just a loose connection! Thank you so much for making such a quality product.

Worked well, had plenty of pressure and volume to get the job done.

I work for a major insurance company roadside service and this is probably the best battery cleaner I’ve used. It works super fast and it’s great for terminals as well as hold downs. It neutralizes immediately and just clean it off with a wire brush and paper towel and you’re good to go.

It cleans very good. I used a wire brush before I sprayed it. After that, just follow directions and you’re good to go. Not complicated, great price, and easy to use

Used this on a 1999 Nissan Maxima. I put new belts on this car about a year ago.  The main belt has been squeaking on start-up on and off since. Tightening the belt would work but I was nervous about over-tightening. This car has had a very slow oil leak for years and I think the belt has been getting contaminated. This CRC Belt Conditioner worked perfectly. It made the belt tacky and completely eliminated the squeaking/chirping at startup. Also you get a lot of conditioner (7.5 oz) for a low price which is great. I have been working on cars for more than 20 years and feel good about this product.

Used it on my 2003 Ford Windstar. Van and the Air conditioner were working fine at higher engine RPMs, but at low RPMS my van was stalling, and the battery and engine lights were coming up as well, I used this to clean the throttle and also bought MAF cleaner (Mass Air flow Sensor) cleaner from Advanced Auto, after cleaning both throttle and MAF sensor my van runs like new, better mileage, better and smoother idle and air conditioner runs all the time, no need to turn it off at low rpms. Great, great great products, thanks Advanced auto.