I'm currently debating on either running 10W-30 or 10W-40 maxlife in my 3800-II next oil change. It is spec'd to run 10W-30, but with the hard driving I do I am wondering if 10W-40 would be more appropriate for me. Is there anyone currently running 10W-40 in their 10W-30 spec'd engine successfully? What harm would this do to my engine and why would I not want to run something so thick?
10W-30 @ 100degC = 10.5 cSt
10W-30 @ 100degC = 13.5 cSt
[ July 08, 2002, 03:32 AM: Message edited by: Dominic ]
10W-30 @ 100degC = 10.5 cSt
10W-30 @ 100degC = 13.5 cSt
[ July 08, 2002, 03:32 AM: Message edited by: Dominic ]