Re: transmission/overdrive oil for R-9

Posted by Owen_Dyneto On 2008/3/28 10:14:18

The gear oil that many of us use in standard transmissions and overdrives, steering gear boxes and differentials, as previously noted, is SAE EP 85W-140. If your trans or OD makes noises with this, using a heavier oil is probably just forestalling the inevitable failure and probably further damage will result -- best to find the source of the problem sooner rather than later.