The manual says to use 5-30. I have some quarts of 10-30 and 10-40. Will there be a problem using that viscosity during the summer or fall?
My other cars said I could use 5-30 at low temps and 10-30 or 10-40 in hotter temps.
I don't see a problem, but with GM you never know.
My other cars said I could use 5-30 at low temps and 10-30 or 10-40 in hotter temps.
I don't see a problem, but with GM you never know.