Rotella in the Allison?!?

[SparkyTX]

Does this (http://www.allisontransmission.com/servlet/DownloadFile?Dir=publications/pubs&FileToGet=GN3465EN.pdf) mean Rotella T (and many other motor oils) are APPROVED by Allison/GM to put in the Allison 1000 tranny?!? :eek: :eek:

This is directly from the Allison Transmission website. It is found under the Approved Oils publication from "Allison Transmission Department/General Motors Corp". :eek:

[DMAX Daddy]

Well its dated 2/12/01. Reading through the list I would say that is is ALL the approved fluids for ALL the Allison applications, not just our tranny.

Im sure others with more knowledge can decipher it though.

[Searay90]

NO NO NO Only ATF fluid goes in the Allison. I don't know what that document was all about, but it talks about both ATF and motor oils. Motor oils do not meet the spec called for in the allison.

[BigAl]

This is a list of C4 Approved oils.............notice the listings in the "Approval No." column......all the approval numbers are formatted "C4-xxxxxxxx".

The following is directly out of the Allison 1000/2000/2400 Series Service Manual:

".............only fluids meeting DexronR-III specifications are acceptable. TranSyndTM fluids fully meet the DexronR-III specifications."

A lot of Allison's other products call for fluids meeting C4 specifications. The 1000 Series in your truck ain't one of 'em!

[SparkyTX]

That's cool. I knew it was for C4, but wasn't aware of the Allison specs. I know I wouldn't ever put anything in mine except Dex3 or Transynd anyway. Those are cheap products considering how frequently I change them. I just found it interesting as I was perusing the Allison website.