I put both transmission and engine treatment in our Maxima last night,drove about 35 miles. I noticed a smoother running engine right away. Drove another 50 miles today, gas mileage is up about 2 miles a gallon. Will switch to Cerma Oil in about 3k miles. -- Sherman J. Round Rock, TX
6/5/15: I wanted to let you know my 1997 Toyota is running like a top since I started using your products. I am ready to change to Cerma Oil and am looking forward to ongoing improvement. The transmission shifts like a dream and the power steering no longer "groans" at low speeds. Thanks for some great products. -- Raul
5/15/15: I spoke with you when I first read about Cerma and have since purchased the transmission, power steering and oil treatment for my two vehicles. The 1997 Toyota is running even smoother than before. Transmission shifts like a dream and the power steering has quieted down by about 50% and continues to improve with more driving. My Mercedes also runs like a dream and engine noise except under heavy acceleration is almost non existent. Thank you for the product and the guidance. -- Raul
Steve A. (Cincinnati)  2012 Prius (58 MPG)06/03/2015
6/3/2015: John, I have been using the Cerma Evo grade oil in my 2012 Prius for over a year now an was thrilled to get 53-54 miles to the gallon. Recently, I just got lazy one day and took my Prius in to the Valvaline oil change and had them put in their top of the line fully synthetic to the car. The next six tanks of gas gave me no better than 47 m.p.g.!............Yes, that's right, the brand new clean conventional oil gave me a 6 m.p.g. reduction in gas mileage after I removed the Cerma Evo Oil. Cerma oil is in a class of one! This is the best oil I've ever used period! Thanks again! ---Steve A. (Cincinnati)
6/4/2014: John, the new technology in the EVO Motor Oil is the real deal for sure. I have seen my gas mileage increase to over 650 miles a tank in my 2012 Prius (58 M.P.G.) Each tankful of gas just got more and more miles after the EVO oil was put in and I love the ideal of having a Self-cleaning oil the Prius engine! *:) happy I will never have to go back to conventional oil again. Thanks again Cerma. Posted by admin (received via e-mail Aug 4, 2014)
Gerald S.  2000 Acura TL05/26/2015
Dear John: I had an appointment with Acura concerning an alignment. My 2000 Acura TL has 302,000.00 miles. As you remember from our phone conversation an application of the engine treatment gave me a very noticeable increase in gas mileage. But, also, the engine performed smoothly and very efficiently. When Acura technicians heard the engine (unaware of the Cerma STM-3 engine treatment I added) they could not believe with such high mileage how quiet and smoothly it performed. The technicians put the engine through a series of diagnostics and with a sense of disbelief and said it is functioning like a new engine. No appreciable knocks or vibrations etc.etc.etc. They also took it out for a road test. I never did tell them about the Cerma treatment. In short they remained stupefied as to its performance and lack of hesitation as is so customary in an over exhausted engine. -- Gerald S.
Brad  2007 Chevy Colorado 05/15/2015
Reposted from http://www.amazon.com/Cerma-Gas-Ceramic-Engine-Treatment/dp/B00AZONLUC/ By Brad on February 25, 2015
This is the best stuff I've ever used. I did not buy from Amazon but bought the Engine Treatment direct from the manufacturer. Now that being said, this is the best stuff I've ever used. I have a 2007 Chevy Colorado with an Inline 5 cyl. Engine. Did not know at the time I bought the truck that inline 5cyl. engines vibrate badly do to to the extra 5th cyl. and I mean really bad vibration at stop lights and especially when I first crank up in the mornings. Poured the Cerma in like it said to and no more vibration I mean right then and there immediately. I've driven about 800 miles so far and love it. So whoever said this stuff does not work is full of it. I am an ordinary guy not a paid spokesman or anything like that. Let me put it this way I'm going to buy two more bottles for our car and minivan I like it that much. And going to buy some for my trucks transmission to. My truck is the guinea pig. I hope this helps. -- Brad
Seth W.   2006 Jeep Grand Cherokee 3.7 L05/05/2015
I tried Cerma in my truck first and after 1 1/2 months my gas mileage went up by 3 mpg . My 2006 Jeep Grand Cherokee 3.7 L went from 14 mpg to 17 mpg local and hyw from 22 mpg to 25 mpg. Then I put it in my lawn mower. Before it was smoking and after 3 times mowing the lawn it stopped smoking. I bought the 2 cycle oil mix and my snow blower worked great this winter. Thanks for this product. -- Seth W. Farmingville, NY
Dan P.  2014 Jeep Grand Cherokee05/05/2015
Cerma Engine Treatment. My wife bought a brand new 2014 Jeep Grand Cherokee last September. She had approximately 15,000 miles on the engine when I added the Cerma Engine Treatment. After the suggested 3,000 miles I changed the oil and used CERMAX 5-20W oil. She drove an additional 3,000 miles. The new Jeeps have a built in MPG screen and I almost didn't believe the results. She is getting 4 more MPG on the highway and 3 MPG more city driving. I found this to be almost unreal since this was a BRAND NEW ENGINE!! Excellent product would recommend it and have recommended it to many others! --Dan P. Brookfield, CT
Dan P.  Colt AR-1505/05/2015
Cerma Gun Lube. I followed the instructions as directed. I shot a 30 round magazine as fast as I could pull the trigger out of my AR-15. After shooting the rounds I accidentally brushed the barrel of my gun with my forearm and instinctively pulled it away so not to get burned. However, I noticed that the barrel wasn't hot. There was probably a 10 second window from the last shot to my touching the barrel. The barrel is a Colt Match Target Barrel. It is a bull barrel for a 5.56/.223, not the standard barrel, so it is thicker. Yes, the barrel absolutely heats after 30 rounds, so I will advise you not to touch any barrel after shooting. The gun I used had a gas block with rapid fire. Ammo used was standard ball ammunition, not reloads. I called my friend over, who also buys Cerma products, and said to him "Want to see how tough I am?" and I held the barrel of the rifle with my bare hand. He stood in awe and could not believe it. I now understand that the metal treatment greatly reduces friction which reduces heat. Just another Great Cerma Product!!! -- Dan P. Brookfield, CT
CJ  2004 Ford Ranger, 4.0L, non-turbo, 4 spd automatic 4X405/03/2015
When I first went to use this product, I was a bit skeptical, I had an issue with my truck starting. I had tried every chemical to run through the gas tank claiming to "fix" rough starts, all of them failing miserably. I ran the Cerma fuel treatment through and sure enough, next day, my truck started up beautifully. That was enough to convince me to try the transmission treatment to see if it could handle the transmission issue, sure enough after running it through my transmission for a couple hundred miles, 1st to 2nd smoothed right out. Now I've got the engine treatment. This is the only liquid I've ever seen that actually not only works and does what it says, but exceeded my expectations. Excellent product! -- CJ, Danbury, CT
Brad T.   Chevy Colorado04/23/2015
Update: 4/23/15: Rocket fuel. Just wanted to say that I have now treated all three of our autos with the Engine, trans, and power steering treatments and they are running like new, if not better than new. Keep up the good work. Now I'm going to get the air cond. treatments for them and the house. Brad T.
Update: 2/25/15: I love the Cerma engine treatment. I now have 800 miles with the engine treatment and my 2007 Chevy Colorado has never ran better, and I bought it new with 13 miles on it. It purrs when I fire her up in the mornings with no vibration, and it used to vibrate bad, and what's crazy is I really thought that it was all in my head and that my truck would go back to normal after a week or so ,but it hasn't. It's only getting better. This stuff is so good I Just bought two more for our car and minivan and Three bottles of the trans. treatment. Can't wait to check them out. Thanks, Brad T.
Original 2/9/15: Just wanted to say that I poured in the engine treatment this morning and drove about an hour 60-70 miles. My Chevy Colorado which is usually very shaky because it is a inline 5 cylinder (did not know that at the time I bought the truck but that's another story). Anyhow my truck no longer shakes. When I got home I went inside ate lunch and then went for another drive just to see if it was all in my head, I fired up my truck and low and behold it runs smooth. I only hope that it stays this way. So far so good. Oh yeah today is the 9th of Feb. 2015 at 3:44 EST. Will keep you up to date in the future on how things are going. You have my permission to post this if you wish. Thanks, Brad T.