Entek smokeless oil Dramatically reduces Hydrocarbon & Carbon Monoxide emission
Recommended and used by more automotive
Professionals than any another similar product!
I had bad valve guides from the overheat and worn rings. Lots of smoke even with 10W-40 until warm, and always on acceleration. I flushed the engine twice – once with a flush and then again with diesel, and then added your product. The smoking stopped. Roy B.