I understand why it is that GM recommends this lite weight viscosity (tight manufacturing clearances; less drag; helps cafe' ratings; etc, etc).
But man-o-man that's some light stuff. Like cooking oil.
Is anybody using a slighly heavier viscosity oil, say even 5w-30?
And if so, what could it harm?
And what are the actual results or differences you've seen from using the 0w-20 ( good or bad ).
Thank You
2019 Tahoe - 5.3 - 6L80 - 3:42 gear
But man-o-man that's some light stuff. Like cooking oil.
Is anybody using a slighly heavier viscosity oil, say even 5w-30?
And if so, what could it harm?
And what are the actual results or differences you've seen from using the 0w-20 ( good or bad ).
Thank You
2019 Tahoe - 5.3 - 6L80 - 3:42 gear