OK you guys have me all confused.... I was under the thought that 10 W 30 was best for a 59 235. You say straight 30 is "Happier" how? less valve noise? longevity?
By the way, my hemi sounds like a darn steam locomotive on 5W20 after 2k miles without an oil change...
Last edited by Skidmarks; 10/17/2010 4:11 AM.
