Synthetic Transmission Oil

[Curt Sprenger]

Ray,
What constitutes "old"?

WE'd need to search out changes in gasket material that stand up the the synthetic, and what year Allison started using the gaskets in both new and trans. builds. I'll try to remember to ask the Allison dealer that question.


A rebuilt trans., depending on the rebuild year could have the new compliant material. 

I know for sure the local Allison shop does not recommend the synthetic for our '87 HTB748.

Curt Sprenger
1987 PT38 8V92 "MacAttack Racing"
Anaheim Hills, CA

On Wed, Oct 21, 2009 at 8:45 AM, Ray <"selahthunder@yahoo.com"> wrote:

 

Hey Curt,

What do you think constitutes "old"? I recently bought a 92 Wanderlodge and it already has synthetic in it... Thanks, Ray

--- In "WanderlodgeForum%40yahoogroups.com", Curt Sprenger wrote:

>

> FYI...Talking with the Dartco Allison shop this morning. They do not

> recommend synthetic oil in the older transmissions. Their experience is the

> older gaskets do not like the synthetic and the gaskets start leaking the

> stuff.

>

>

> Curt Sprenger

> 1987 PT38 8V92 "MacAttack Racing"

> Anaheim Hills, CA

>