Or you have an engine that is known to be unusually tough on the oil.
Originally Posted By: wsar10
to answer OP's question.
if you don't live in extreme climate, or want extended OCI's there is not a REAL purpose for using Synthetic.
Originally Posted By: wsar10
to answer OP's question.
if you don't live in extreme climate, or want extended OCI's there is not a REAL purpose for using Synthetic.