Synthetic blend oil!!

[Anquia]

Do you do some highway driving or is it all short trip driving? Assuming that it's at least some highway driving, say once a week, then you could run just about any oil in that car & not have problems.

Tranny oil, then that's a different story.

 

[GMC1994K1500SierraSL]

I drive 100km highway a day, and about 1000km on the weekend or days off, very little short trips, I regular tranny fluid, whatever is recommended for the 4l60e


Sent from the Sierra Club

 

[tanman_2006]

Highway miles are good for extended drain intervals and synthetic oil

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