cdaigle430
Veteran Member
I have not changed it yet and its 11 years old-i dont think im very smart. I Will change it next spring...So dudes, you convinced me to switch over to 5w40 for this oil change coming up. So educate this here dummy, what's the downside to 5w40 rotella in summertime, none right? And any issue mixing it with 15w40 I have left over, come next oil change in spring/summer?
Also right quick, are you all changing your coolant every year regardless of hrs put on it? I put in the hd extended life stuff last fall.