Duramax Blowby

“My 2003 Silverado Duramax had lots of blowby. It’s only got 242,000 miles, mostly pulling a 5th wheeler around, power was still good. I got your Blowby Pack and got the oil flush done. Before using the Flushing Oil Concentrate when I was stopped at traffic lights, I could see blowby coming out each side of the truck. Now within a couple days the blowby has reduced by about a half, definitely a lot less blowby smoke, I’ve got to get down and look under the truck to see, and now there’s only a little bit coming out. I think the more I drive it now using the FTC Decarbonizer in the fuel will probably fix the last of the blowby. Good products.”

Bert G, Bellingham, WA