09-27-2016, 07:17 AM
Arvinmeritor is the successor to Rockwell. I used their website to see what was recommended.
I may have had Mobil 1 in it based upon a label indicating their products were installed at the factory.
I put Mobil 1 in the 77 coach I used to have and I saw no evidence that it was creating any problems. In fact, the few times I crawled under the coach while on the road the "pumpkin" seemed cooler that with the original 140 oil.
If I had put Mobil 1 in my 93 as you have done there is no way I would drain it, I would use it. I have not looked at the specs of the Delvac and Mobil 1 to see if there is any difference but that could be a worthy research just to sooth the mind.
I may have had Mobil 1 in it based upon a label indicating their products were installed at the factory.
I put Mobil 1 in the 77 coach I used to have and I saw no evidence that it was creating any problems. In fact, the few times I crawled under the coach while on the road the "pumpkin" seemed cooler that with the original 140 oil.
If I had put Mobil 1 in my 93 as you have done there is no way I would drain it, I would use it. I have not looked at the specs of the Delvac and Mobil 1 to see if there is any difference but that could be a worthy research just to sooth the mind.
Jon Kabbe
1993 coach 337 with Civic towed