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

I think we performed a pretty significant experiment with your product today. My training officer did not return to the office but I will get more information Read more

Fuel Treatment from April 14th, 2015: Great stuff. My gas mileage definitely goes up steadily, as per my digital gauge, when I use this stuff. I absolutely Read more

Products Used Cerma Engine Treatment, Cerma Motor Oil:
I purchased the Diesel Engine treatment after reading about it and its possible benefits. I am Read more

Just prior to winter in 2012, I used 1/3 an ounce of Cerma engine treatment in my 1999 Craftsman snow blower. In the past it was necessary to have the 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 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 used the Cerma foam treatment in the following handguns: .44 revolver, .357 revolver.40 semi, .357 sig semi and AR 15 .223 rifle so far. I am very pleased Read more

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

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

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

I put Cerma Trans in and have noticed the trans shifts better and the temp gauge is reading cooler.

– Drew (10/25/2012, 09:35 PM)

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

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

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

Works. 'Lil spendy but damn worked. Bought In april 2014 used in my '04 6.0 F350 4x4 an put some in my dad's dodge '05 3500 5.9 he even commented + on Read more

I used Cerma STM-3 Engine Treatment in my 2002 Toyota Sienna Minivan; Fuel mileage went up from 260 mile per tank to 355 miles extremely happy with gas 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

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

I own a 2002 Mack semi. My truck started using 2 to 3 gallons of oil per week. I was told I needed to rebuild the motor, rings, sleeves, rod, and main Read more

Hi John, I want you to know that the Cerma Transmission Treatment fixed my 25 year old BMW M6 manual tranny, which did not want to go into first gear much Read more

Update: My 2004 TC now has 349,000 miles. At 288,000. It was using a qt of oil every 500 miles now it uses a qt at 4,000. This van has another 100,000 Read more

I was your biggest skeptic. I bought the Cerma Engine Treatment because of how passionate you were about the product. It has been sitting on my toolbox Read more

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

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

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