you might want to rethink your oil you use

[VR4Drive92]

best of luck, I can't even get someone to respond on redline 5w50. No facts in this thread, only conjecture.

Facts? Well... sadly, you probably won't ever get any real data on this. Unless one of us joins an oil pump company or engine manufacture in the lubrication group. Or the community puts together some money and donated engines to have a lab run some tests.


Your question on whether or not 5W-50 is ok. Well... Test it.


Send a sample of your fresh oil to have it analyzed.

Measure your bearing clearances and then go hit some serious dyno time (or 0.5 Mile or 1 mile racing at full tilt.)

Monitor oil temps, keep them consistent if possible.

Then tear down and re measure after 50 passes. See what the measurements show.

Send used oil to get analyzed.


The reason that oil threads all over the internet are never conclusive is because the only info out there is peoples saying... "I've run XXX oil some... its fine." No one has any real evidence nor a well made experiment.

The M5 community has shitstorm threads over it. 5w-30 vs 10w-60 and the link to the bearing failures in those cars. (They wipe bearings... BAD.)