The other day I spent some time waiting for a register inside a gas station. Whiile inside I saw bottles of Pennzoil SAE 40 (i.e. Heavy Duty / containing detergents).
Another post this year showed good results using straight weight racing (VR1) SAE 40.
Has anyone tried using HD monogrades in a shared sump bike?
Just pondering the idea, can you mix part of a straight weight with a multigrade HDEO to manage shearing losses?
Lastly, any UOA/VOA on monograde HD Pennzoil/ Castrol/ QS monogrades?
Another post this year showed good results using straight weight racing (VR1) SAE 40.
Has anyone tried using HD monogrades in a shared sump bike?
Just pondering the idea, can you mix part of a straight weight with a multigrade HDEO to manage shearing losses?
Lastly, any UOA/VOA on monograde HD Pennzoil/ Castrol/ QS monogrades?