[chiem]

Synthetic oil provides better protection for your engine. The only two rules I know of are:

1. don't start using synthetic oil until at least 5k miles.

2. once you start using synthetic oil, don't switch back.

--k

Originally posted by KCW:
what oil should i have put in my IS? I have been told to use Mobilsynthic, however I am not sure why.....

Please advise-
Kevin