Quote:
Originally Posted by death_blossom
so, you're agreeing with me? 
you totally reinforced my opinion on why 5w20 isn't really that great of a lubricant. |
My opinion is that 5w20 is a 'good enough' lubrication solution, but not the best option. Car makers push for 5w20 as much as they can to reduce their CAFE fees.
I don't think it's right to classify the entire range of 5w20 as 'not that great'.
That being said, I'd happily use quality synthetic 5w20 over a low quality dino 5w30 made from a shitty basestock, assuming that 5w20 is spec'd for the application. But head to head same quality synthetic 5w20 vs 5w30, I'd take the minisicule, immeasurable drop in fuel econ for slightly better wear protection by using the 5w30.