DURAMAX Diesel Engine (LML/LGH) - 2011
In Brief 1-1
In Brief
Initial Drive Information
Transmission . . . . . . . . . . . . . . . . . . 1-1
Performance and Maintenance
Engine Oil Life System . . . . . . . . 1-2
Diesel Particulate Filter
(Exhaust Filter) . . . . . . . . . . . . . . 1-3
Diesel Exhaust Fluid . . . . . . . . . . 1-5
Initial Drive
Information
Transmission
Cold Operation
(Allison Transmission)
When temperatures are very
cold, the transmission will prevent
certain operations to protect against
damage. The chart below shows
shift range availability based on
transmission oil temperature:
.
All shift ranges available
at −25 C (−13 F) or above.
.
2 (Second) and 3 (Third) shift
ranges only at −35 C (−31 F)
to −25 C (−13 F).
.
2 (Second) shift range only
at −35 C (−31 F) or lower.
Torque converter clutch operation
will also be prevented when air or
transmission oil temperatures are
below certain levels.
For areas where ambient
temperatures are below −40 C
(−40 F), use synthetic
transmission fluid approved to
Allison Transmission specification
TES‐295. See Recommended
Fluids and Lubricants on page 11‑8
and Automatic Transmission Fluid
on page 10‑11.
Adaptive Shift Controls
The shift quality of a new vehicle
may not be ideal because the
Adaptive Shift Control process
may not have determined the best
settings for a particular shift or
condition. Shift quality will improve
with continued driving.
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