Transmission fluid

[mdrag]

gdblake,

Mobil 1 synthetic ATF is on the Allison Approved oils list (available as a pdf document download):

http://www.allisontransmission.com/p...cationType=All

However, only Transynd is approved for extended drain intervals, so if you use Mobil 1 ATF, you will have to follow the normal maintanence schedule.

The OEM pan on our trucks is the shallow pan, and a comparison of the deep and shallow pans:

STOCK SHALLOW PAN CAPACITY 7.4 QTS (ALL YOU CAN DRAIN)
LARGE PAN CAPACITY 7.4 QTS + 3.2 QTS = 10.6 QTS

TOTAL CAPACITY (DRY SYSTEM) W/SHALLOW STOCK PAN 12.7 QTS
TOTAL CAPACITY (DRY SYSTEM) W/DEEP PAN 15.9 QTS

TORQUE PAN BOLTS = 20 ft lbs
TORQUE DRAIN PLUG = 25 ft lbs
NOTE*
1. Old suction screen seal may stick in.
2. Allison filter has removable magnet.

Part #s for the deep pan and internal suction filter for the deep pan:

DEEP PAN SUCTION FILTER
new part # 29537966
old part # 29536891

DEEP PAN
part# 29536522

PAN GASKET
part# 29536526

I listed the pan gasket - it is reusable and should not need replaced when changing pans.

ON EDIT: The forum software edited the link, the last part of the link should read:

GN3465EN. j s p

Leave out the spaces bwtween the 'dot' and the last 3 letters. Or go to

http://www.allisontransmission.com

and chose PUBLICATIONS from the menu below the Allison emblem, then search BY PUBLICATION NUMBER - using GN3465EN.