Heard of this product from a friend put it in my dads 2001 Peterbilt Generator after about 2 min of running it quieted down and I couldn't even tell it Read more

8/27/14 - FYI! I had my car at the dealer this morning for a recall service appt. My 2011 Fusion with 81k miles on the 2.5L 4 cyl duratec engine was "quieter Read more

At first I thought this was another slick50 type product but after checking out the website and finding no bad reviews I said what the heck let me try Read more

I recently stopped in at my local gas station to fill up like I do twice a week when I met the attendant (Ken Briscoe). We got to talking passing time Read more

Thanks a lot for explaining in detail how Cerma STM-3 works. I'm going to purchase & use one. My vehicle uses 5W-20 engine oil. Its engine has a Multi-Displacement Read more

Purchased a 1990 Buick Reatta with 143,000 miles on it. It runs great and can only run better with the Cerma products I just purchased (Cerma Engine Value Read more

GREAT product I use CERMA in EVERYTHING from my TORO push mower to both my Chevrolet vehicles with GREATLY improved gas mileage & lawn mower that runs Read more

Unbelievable MPG increase!! My new 2015 subaru outback 3000 miles had 27.4 miles per gallon. I added this to the oil chamber under the hood, reved the Read more

I was a skeptic, but when I added the Cerma Engine Oil Treatment to my Yanmar, the change was amazing! Within 20 minutes the engine smoothed out, became Read more

I have been using Cerma products for close to two years now in my all my vehicles, tractors, excavator and dump truck. I am totally impressed with all Read more

I came across the Cerma product when we were looking for metal protection from our hydrogen units in gas burning engines. I first tried the Cerma in my Read more

I treated my 1998 Dodge Diesel Pickup with 6 oz Cerma Engine| Treatment and the engine smoothed up and has much more power. I am very satisfied with this. Read more

Bought it used in February, added the motor treatment as I left the dealer. Have averaged 41mpg since I bought it, 18% improvement over the highway rating Read more

Would recommend this to anybody who is looking to keep their engine long lasting no matter how many miles is on it. Already used on three of the four cars Read more

I put Cerma Engine Treatment into our 1987 Suzuki Samurai. It completely smoothed out the idle, and improved our gas mileage by about 18% right away! Love Read more

Just a quick note to tell you what Cerma has done for my trucks.

We put Cerma in the whole system of one truck with 798,000 miles, (engine {470 Detroit}, Read more

Hi, After 2000 miles my 2010 BMW 550i it runs better, no engine noise and 2-3 more MPG. Thanks ! -- Stephen K.

Dear Great Cerma Product, I have just used the transmission and engine treatment. So Far So Good. I notice an improvement with the transmission, and the Read more

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 Read more

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, Read more

I added the Cerma to the engine (7.3L IH diesel) and power steering box but not yet to the rest of the drive train. When I first put my foot on the gas, Read more

December 2007 - I treated my 2002 Harley Davidson Custom Bagger motorcycle on the trip to Arkansas. The main thing that I noticed is the fuel mileage Read more

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 Read more

O ahhhhhhh mazing :) At first glance, i thought the price was a little crazy.but some in-the-know car guys that i know convinced me to give it a try, Read more

Did a test session earlier, the initial run since adding the CERMAX 5W40 oil plus the manual transmission treatment.

First thing I noticed when shifting Read more

In my application, 1991 BMW 750i 5.0L 12 cylinder, I was mainly trying to correct annoying hydraulic lifter noise without having to replace any lifters. Read more