racerx250
SDD Junior Member
Do I go amsoil synthetic 15w-40... after 197k miles of occasionally lugging around a tree stump grinder..... ??
After 197k, you must be doing something right. Why change now.
i dont believe youll EVER see your return on investment on synth. oil.
based on the cost difference alone youd have to run synth. oil at LEAST
3x longer than conventional.
theres something to be said for FREQUENT (5k) oil changes.
and theres no way in HELL that id run any oil 3x longer w/OUT
frequent testing of the oil.