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Old 12-13-2012, 08:03 PM
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smslavin smslavin is offline
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Default 75w90 vs 140?

I was gathering some stuff to work on the Sequoia this weekend and picked up some gear oil for the diffs and t-case. I didn't look at the manual before I went and just picked up the 75w90 that I use in the FJ. Looking at the manual now and it says the rear diff should have 140. Am I correct in thinking that there isn't too much of a difference between the two? The Sequoia isn't going to be towing anything nor will it be seeing dirt (at least for the time being). Should I head back tomorrow and exchange some of the 90 for the 140?
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Old 12-13-2012, 10:17 PM
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kurtnkegger kurtnkegger is offline
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I'd swap out to the 140 if the manual specifically states that weight. I'm not saavy on differentials, but given you have the chance to get the right oil before hand....
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Old 12-13-2012, 10:47 PM
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If it calls for 140, then that's probably what I'd do. But with the low temps we're getting into this time of year, the 90 isn't gonna hurt anything either.
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Old 12-13-2012, 11:16 PM
spectre6000 spectre6000 is offline
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It'd be like putting zero weight in your 40's crank case. Accelerated wear and the potential to bypass seals/gaskets creating leaks that weren't previously there. The lighter oil wouldn't handle the heat as well either.
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