Synthetic Oil
#16
SAE 140 would increase drag at operating temperature, negating the advantage of the thinner 75W when cold. RedLine had a chart showing the mileage increase can be significant for short trips in cold weather.
Thread
Thread Starter
Forum
Replies
Last Post
HarleyScooter
6.7L Power Stroke Diesel
21
01-09-2012 11:45 AM
Snowseeker
1999 - 2003 7.3L Power Stroke Diesel
8
07-16-2011 06:27 PM
03-6L-X
1999 - 2003 7.3L Power Stroke Diesel
17
11-24-2009 09:15 PM