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The cost difference is negligible to me.
1. Can I run 75W90 instead of 80W90 in TC and diffs?
2. Will I see any benefit using a synthetic instead of dino?
My experience with passenger vehicle diffs is a LOT different than heavy machinery... The 8.8 in my fords can take 75w90, 80w90, all the way up to 75w140 and doesn't care... but there's a huge difference between a diff that's handling a couple thousand pounds and a diff handling a couple thousand TONS....
I did note the LO says to run 75 straight in colder climates, but didn't know if it'd seriously screw things up running it constantly in warmer (higher than -15F) weather. I think the coldest it got here last year was in the 20s. .heh.
1. Can I run 75W90 instead of 80W90 in TC and diffs?
2. Will I see any benefit using a synthetic instead of dino?
My experience with passenger vehicle diffs is a LOT different than heavy machinery... The 8.8 in my fords can take 75w90, 80w90, all the way up to 75w140 and doesn't care... but there's a huge difference between a diff that's handling a couple thousand pounds and a diff handling a couple thousand TONS....
I did note the LO says to run 75 straight in colder climates, but didn't know if it'd seriously screw things up running it constantly in warmer (higher than -15F) weather. I think the coldest it got here last year was in the 20s. .heh.
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