Quote:
Originally Posted by aerobod
Quote:
Originally Posted by The_otherM235i
Hey everyone, currently running the stock bmw oil in my rear diff, saw on ECS they sell liquid molly diff oil and was thinking of swapping it quickly. How much fluid fits in the diff? Is it as simple as dropping the plug and refilling it?
Was gonna use liquid molly Hupoid gear oil 85w -90 as its meant for track use witch I do.
Thanks guys!
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Typically if a 75w90 diff oil is specified, you would want to go to a 75w110 or 75w140 for track use, as an 85w90 would be thicker when cold (and hence problematic in the winter), but would have the same viscosity at 100C as the 75w90 oil.
75w140 oils at 120C have a similar viscosity to 75w90 oils at 100C and with some cars you may see diff oil temps up to 130 or 140C on the track.
Be aware oils such as Redline No-Shock range compared with the normal range with LSD additives or NS range without LSD additives may cause problems due to the grease-like polymer additives. |
I ordered liqui molly Full synthetic 75w90 GL5 that said it's for the "track" only other option is red line 75w110 gl5. Should I go with that instead?