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

Thank you John,
It was a pleasure speaking to you on behalf of your additives.I was amazed and I'm still smiling and overwhelmed with its results. Sir 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

For a freestyle stunt rider, "heat is the biggest problem for bikes”. "Took me some time to test the product in the Kawasaki, but finally was able to Read more

Update from NZ on Cerma: Hello, December last year I purchased several products from you. I changed my oil ran the vehicle for a while the added Cerma. Read more

1st attempt to test this Cerma engine treatment on my 01 Accord V6 - org 68,000mi on SEP-02 2015. Brand new Mobile 1 full synthetic oil w/ Honda genuine Read more

What the ......, this stuff actually works!
Here's the story...1990 Mitsubishi Montero that I bought new. First it was the unofficial Cheerleading Team Read more

Vehicle: 2005 Chrysler Sebring with 54,000 miles.
Product Used: Cerma Engine, Cerma Transmission, and Cerma Blue Ice
Was skeptical despite enthusiastic Read more

The boat is going over 28 MPH. Granted clean bottom and props but I don’t believe it ever went over 26ish on this boat. It is a 40 FT Meridian Yacht weighing 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

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

I purchased a 1996 Jeep Grand Cherokee with 196,000 miles on it. The transmission was beginning to act up after a couple of months driving the vehicle. Read more

Dear Cerma, I started using your products in the summer of 2013. I travel all over the country in my 1991 Dodge D250 two wheel drive with a 5.9 L Cummins Read more

Best product yet. I am a contractor. I put a lot of miles on my trucks -- about 500,000 on one truck that I bought brand new 4 years ago. I put in Cerma Read more

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 Read more

The amazing Cerma technology! The reason I say amazing is because I worked at Douglas Aircraft in the engineering changes on the DC-9 program way back Read more

Thanks for the emails, i am getting better gas millage in my bike, was at 39 MPG. I am now getting 43 MPG after 300 miles of riding on Cerma! --Greg J. 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 recently SiC treated a 1100cc motor on a 1984 Honda v65 Sabre VF100S and began with these compression numbers:

Cylinder #1: 120/170 Cylinder Read more

I am amazed at this product. I put Cerma STM-3 in my 2009 subaru imprezza and went from 33 mpg hwy. to 38 hwy! the engine seems to be so smooth you can't 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

Thank you Cerma! The day I put Cerma in my engine it smoothed out my choppy idle at 800rpm. And even today it is still getting 5.5mpg to 6.0 mpg driving Read more

Engine Treatment: Added CERMA and gas mileage has increased and harmonics are much better. Love to drive my car more than ever. Bought a car with over Read more

I just wanted to tell you about my Volvo semi that I drive. It is a 2015 Volvo Day Cab with A/T. It now has 39,500 miles on it. I treated it at about 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

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 Read more