quote:
Originally posted by Starbreaker666:
What are some of the more shear stable 5w-30 Dino oils out there?
As you can see in UOA's Section, even the #1 best selling, most well-known Synthetic out there will shear down. So, logically, 5w-30 Dino's do not stand a chance. Just go out and buy one grade heavier oil than what you need, and pour it in your motor. That way, you wind up with the grade you need even after the shear-down process.
My own favorite Dino oils shear down a lot. I like to use 10w-40, which is notorious for shearing down after 1 or 2 thousand miles. I think I will try adding 1 Quart of 20w-50 during my next oil change. Should help towards keeping it a 40-weight for a little bit longer.