Z zr900 Joined Apr 4, 2011 Messages 41 Location MI Oct 25, 2011 #1 I have to replace my rear diff cover due to a leak. The truck specs 75w90. I have 2 quarts M1 75w90 and .5 quart of Smittys super syn 75w140ls and was wondering if I could mix these two? Last edited: Oct 25, 2011
I have to replace my rear diff cover due to a leak. The truck specs 75w90. I have 2 quarts M1 75w90 and .5 quart of Smittys super syn 75w140ls and was wondering if I could mix these two?
4 4x4chevydude Joined May 6, 2009 Messages 701 Location Northern IL Oct 25, 2011 #2 you could it was just make it a bit thicker
X xxch4osxx Joined Mar 11, 2009 Messages 2,995 Location Cedarbrae, Ontario Oct 25, 2011 #3 Won't hurt a thing.
U umungus1122 Joined Feb 12, 2008 Messages 1,282 Location PA Oct 25, 2011 #4 No problem. I have 2 qt. of Pennzoil 75w-140 and some RP 75w-90 mixed in mine.
