JC30075
06-11-2002, 12:11 PM
Another thread (why does bmw suggest 0w40 or 5w40 motor oil?) turned to this subject which is probably worthy of it's own thread.
Valvoine (MaxLife) and others are marketing mineral oil to owners of high mileage cars which ". . is a blend of premium base oils with a seal conditioning agent, extra cleaning agents, additional anti-wear additives and friction modifiers."
Anyone know of any independant research that supports the validity of these purported advantages?
I think we're all convinced of the value of syn oil, but understand that converting to syn after years of dino use may create a leaking problem because of the superior cleaning ability of syn.
Is there a syn with these additives or an aftermarket "seal conditioning" additive? If so, the leakage problem may be avoided when doing a switch.
If not, does it make any sense to blend a few quarts of the "high mileage" mineral with a few quarts of syn?
Valvoine (MaxLife) and others are marketing mineral oil to owners of high mileage cars which ". . is a blend of premium base oils with a seal conditioning agent, extra cleaning agents, additional anti-wear additives and friction modifiers."
Anyone know of any independant research that supports the validity of these purported advantages?
I think we're all convinced of the value of syn oil, but understand that converting to syn after years of dino use may create a leaking problem because of the superior cleaning ability of syn.
Is there a syn with these additives or an aftermarket "seal conditioning" additive? If so, the leakage problem may be avoided when doing a switch.
If not, does it make any sense to blend a few quarts of the "high mileage" mineral with a few quarts of syn?