Quote:
|
Originally Posted by Sewie
|
Forgot about Onstar, since I cancelled them.
Quote:
|
Originally Posted by flkeysff
That is why, if you are going to follow the indicator I would use either Mobile 1 15000 mile oil or use Amsoil.
|
As for using synthetic oil....not necesssary in this day and age of advanced oil processing and adatives. But, it sure won't hurt.