bfloyd4445
Silver Member
Excellent for older engines. Although in 15W40 I thought their new signature max duty had a slight edge. YMMV.
Haven't used that one yet. Wish they still had a straight 30wt.
Excellent for older engines. Although in 15W40 I thought their new signature max duty had a slight edge. YMMV.
according to amsoil that isn't the case. They told me that the additive package in the oil will degrade over time and should not be used after five years.