Originally Posted by bluesubie
Redline 5W30 is thickAr than M1 10W30 at 100C, and has a higher high temp high shear viscosity as well. Must be those polyol ester base stocks.
My head is spinning too.
Yeah...when I was looking into oils, I noticed that Mobil1 10W30 was somewhere in between Redline 5W30 and 10W30. I guess you can't always go directly off weights...I'm definitely gonna try M1 10W30 next oil change. It doesn't seem like a huge jump from M1 5W30....which is thin already.