Quote:
Originally Posted by David1
Don't waste your time. Will not do anything for your car.
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+1
There are before/after pictures people have taken using a borescope which show very little, if any, reduction in the amount of carbon on the valves after using Seafoam. Seafoam is simply a mixture of pale oil (approx 60%), a petroleum solvent called naphtha (around 25%) and isopropyl alcohol (approx 15%). The truth is, it will do very little to clean off the baked-on carbon on the valves. The white smoke people attribute to carbon being burned off is nothing more than the oil within Seafoam itself being burned.