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

So...I just got the oil changed to Cerma 5W30 and could feel a huge difference just starting the car up. Engine vibration in the pedal has gone almost 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've already used Cerma STM-3 Engine Treatment on 1 vehicle and plan to use this shipment to do a second. Great product, great support. I love this product, 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

John,
I applied the product to my Lexus, and I could tell and real difference in power. If I can get my right foot to cooperate, I bet I’ll see fuel 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

The best. Powered up my 12 year old truck -- it feels like new. I have a Ford F250, 2003 with 200,000.00 miles and in good shape, but after I used this 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

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

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

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

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

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

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 both transmission and engine treatment in our Maxima last night,drove about 35 miles. I noticed a smoother running engine right away. Drove another Read more

We have used Cerma in a gear box which is 1 of 2 identical units. The one
we treated was initially running 60 decrees hotter than the other one. We want Read more

Just received the engine treatment and it works perfectly :)

My car has more torque, sounds great it's also smoother running.
My vtec kicks @ 6k and 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

CERMA IS THE REAL DEAL!!

I heard about Cerma oil treatment from a friend who had amazing results with a sluggish high-mile Acura minivan. I treated Read more

FedEx driver reports truck running smoother with increased power, as prior the truck was having problems getting up to freeway speeds. Driver was very Read more

I am the guy who spoke with you at length and purchased some fuel treatment, oil additive and gun lube. I put the fuel and oil additives in immediately. 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

Before using Cerma, this car, a work car with 160K miles, would jerk every time it changed gears when you drive and the water temperature would be pointed Read more

I am writing you today to let you know how pleased I am with your product (Cerma). I have seen many products make many claims and usually there is a lot Read more

I have purchased 2oz of CERMA engine treatment with STM-3 and got a free 2oz of Fuel Treatment. Thank you for the gift! Vehicle is: Subaru Legacy 1997 Read more