[Railcarmover]

I'd caution against using too much in the fuel, the intake valve and bowl isn't subject to the cleaning effect of heat the exhaust side has, any oil deposited in this area doesn't wash, it combines with carbon to make a tar-like substance.This is prevalent in an engine I'm doing now,a gummy build up in the intake bowl and back of intake valve,way more than there should be with a low mileage engine this is..