Post by
lfootmatt »
https://forums.nicoclub.com/lfootmatt-u14072.html
Sun Nov 14, 2004 8:13 pm
Fred,
I'm pretty sure you've anwsered this before, but I just can't remember.
Do you have any technical objection to stocking up on M1 given the present good deal available?
I've got a 93 J30 , 2001 3/4 ton suburban with an 8.1L and 4.10 gear and a 1990 Master Craft 240sc Ski boat with a HO454 to feed and care for. I typically run 5w-30 in the J and put 5w-40 in the burb last change and 15w-50 in the boat. The burb shows higher start up oil pressure w/ 5w-40 vs 5w-30 and has a more noticeable piston skirt knocking on start up than with the 5w-30. I'll be going back to the 5w-30 for the winter. Thought the higher 40 might be better in the Tucson desert heat. Didn't really like the 5w-40 start up.
Thanks, Matt
PS As a Chemist myself, I always look forward to your responses. I'm not a praticing one anymore so it is good to hear the tech speak once in a while. I deal with other bad actors now.