[77newell]

After the recent post about rear gear failure I thought it might be time to change that oil in my 93 coach. I had inintended to refill it with Mobil 1 75W90, then when I checked the Arvinmeritor site I found that oil was not on the approved list of oils though a companion oil Mobil Delvac Syngear was on the list. I donknow what makes the latter different. Other commonly available approved oils were Syn-Gear by Castrol and Valvoline HD Synthetic Gear EP.

IT seems there is a bit of a surprise and some learning every time I go to do something.