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Differences between gear oil - need help

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Old 11-10-2018, 09:26 PM
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Default Differences between gear oil - need help
So i accidentally put in 85w-140 gear oil in my front differential instead of 80w-90 that the service manual says is correct. Do i need to drain it and go get the 80w-90?????
 
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Old 11-10-2018, 11:59 PM
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Actually, 75w-90 is what goes in the front. But oil is oil. There's no clutch packs or valve bodies or lifters here. Gear against gear. I wouldn't lose sleep over it.
 
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Old 11-11-2018, 10:27 PM
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Originally Posted by Ramman18
Actually, 75w-90 is what goes in the front. But oil is oil. There's no clutch packs or valve bodies or lifters here. Gear against gear. I wouldn't lose sleep over it.
thank you that makes sense!
 
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Old 11-12-2018, 09:58 AM
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Here in the service manual it says the front takes 80w-90
 
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Old 11-12-2018, 10:45 AM
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Meh, my Chilton says 75 front, 80 rear, but it's not that big of a deal. It's like putting in thicker engine oil.
 
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Old 11-12-2018, 01:37 PM
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Originally Posted by Ramman18
Meh, my Chilton says 75 front, 80 rear, but it's not that big of a deal. It's like putting in thicker engine oil.
Where you been man!?!? Haven't seen you on her much lately.
 
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Old 11-12-2018, 04:01 PM
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I'm here. Just not much to say lately.
 
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Old 11-12-2018, 06:06 PM
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It won't hurt a thing, I run 85w140 in all of my differentials, the thicker gear oil provides better protection and quiets it down some.
 
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Old 11-13-2018, 09:12 PM
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My 2001 calls for 75w140 in front and in the rear either 80w90 for standard use or 75w140 for heavy duty/ towing.

i wouldn't worry about it
 
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