Contains Parrafin ! Not Good For Engine In Long Term !
if u r using good quality oil no need to add additive.
the engine oil already got their own additive mix.
more read up about oil, cars, etc can be read here.
http://www.carbibles.com/additives.html
jin,
still go tuffoil. so how about tufoil?
yeap, i have used it, and no noticeable worthwhile difference...after about a few months i changed engine internals, requiring a full overhaul...no sludge buildup....if sludge were to have build up, im guessing a coupla months is too short a period, or mebbe it does not result in sludge buildup at all i wudnt noe...