FocalPoint,
Recently i intro Tufoil to my friend, but a guy advice me not to use it. Here is his statement;
"It is high recommended that you do not use engine treatment of oil treatment. Service and change your oil regularly and you will do just fine. Btw, tufoil is not good because it contains Teflon. Now, teflon maybe be know to be the slipperiest material in the world, but teflon turns into hardened sludge in high temperature! They potential can block your oil feed lines. There was lawsuit flying back and forth from Dupont and these engine treatment manufacturers. However Dupont's response was they didnt endorse Teflon to be used in engines. Do some search and you will find many interesting facts about products like such."
Hope u can clarify this.
;)