Transfer case gear oil: Is 75W-90W OK? - AcuraZine Community

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Old 03-14-2010, 09:39 PM   #1
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Transfer case gear oil: Is 75W-90W OK?

At some point, when the east coast weather gets a bit warmer, I'll do my tranny and transfer case. The repair manual suggests API G4/G5 in the SAE 80W-90W range. Seeing that it rarely gets below 0 degrees in the Philly suburbs, 90W hypoid gear oil is the requirement. However, I have a bottle of Valvoline synthetic 75W-90W gear oil in my garage (http://www.valvoline.com/products/br...er/gear-oil/59). Would this be OK to use? Does the weight range matter in this case? Would this oil be too thin? Thanks!
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Old 03-19-2010, 11:04 AM   #2
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75w90 may work fine in transfer case

After some reading/searching, I found some comments from people asking the same question with their vehicles. Here's a response from Mobile 1 on using 75w90 where 80w90 or 90w is called for:
http://www.mobiloil.com/USA-English/...Viscosity.aspx

Could be propaganda from Mobil 1, but makes sense it's still 90w at operating temperature and it meets the GL-5 EP rating. Comments?
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Old 03-19-2010, 01:28 PM   #3
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I have used the Mobil 1 product before, as long as it meets the API GL5 its fine....that is the standard that is required etc.

Last edited by JPSMAN; 03-19-2010 at 01:30 PM.
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Old 03-19-2010, 01:28 PM
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75w90, 75w90w, acura, case, fluid, g4, gear, gl5, hypoid, mdx, mobil, oil, parts, range, transfer

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