Rearanger
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- Feb 4, 2008
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- Location
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- Vehicle Year
- 2003
- Make / Model
- Ford
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I have some Valvoline 75w-90 full synthetic gear oil with slip aditive. Manual calls for 80w-90 in differential, but lots of talk about the 75w-90 being perfectly OK. I have 7.5 gears.
Any knowledgeable advise?
Thanks
I have some Valvoline 75w-90 full synthetic gear oil with slip aditive. Manual calls for 80w-90 in differential, but lots of talk about the 75w-90 being perfectly OK. I have 7.5 gears.
Any knowledgeable advise?
Thanks