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Noticed the original factory torque marking is still on the differential in my car meaning the oil has never been changed. I plan to swap out to a new clutch type diff next year. I have this oil left over from the bimmer. Is this fine to run for a season? I've got a whole liter of the BMW stuff and half a liter of the other. Figure it has to be better than 106k mile / 13 year old fluid.
Figured I would check to see if there was something going on in these cars' diffs. I had a helical diff in the bimmer and was using different oils in it as an experiment to see the different in lockup and torque transfer. If you ever have a helical, run that valvoline oil if you want high torque differentiation. Just never use anything with a slip modifyer in it haha, basically makes the thing not even work.
This diff fluid OK for a season?
