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

I am a journeyman machinist/machinery mechanic automotive enthusiasts with 40 years of formal and trade experience.presently I am rebuilding/upgrading Read more

Cerma makes everything run smoother. I was skeptical of Cerma at first, but decided to try it. For example, my wife owns a 2000 Jeep Wrangler. When 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

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

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

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)

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

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

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

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

TRY THIS IN YOUR ENGINE.........I was amazed, within 15 mins how better my engine sounded and now my car rides as good as ever........Cerma is awesome. 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

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

Hi everyone!

This post is a "give back" I hope to help a few with this one, as so many helped me with replies on my first post. I learned much. At Read more

Just treated my 2007 Toyota Avalon with the Cerma Engine Treatment and the Cerma Transmission. Car is running smoooooth (the vibrating is down to almost Read more

Wanted to update on the Lancer. We are 2k miles into the cerma max 5w40 oil and I pulled the dipstick... No joke it looks like I just did the oil change. 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

I've read this thread for a while and decided to buy some AT treatment and 2 engine treatments yesterday. But not for my Veloster. I bought a beater truck 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

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

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

Several tens of thousands of miles ago, I found out about Cerma Engine Treatment -- yep, I was skeptical. But talking with these wonderful folks convinced 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

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

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