Maintenance - Updated Minimum Acceptable Oil Levels
85chevy0485-54
6 (VI)
MAR., 1985
Subject: MINIMUM ACCEPTABLE OIL LEVELS
Model and Year: ALL PASSENGER AND LIGHT DUTY TRUCKS
TO: ALL CHEVROLET DEALERS
This cancels and replaces Chevrolet Dealer Service Information Bulletin 83-I-57 which should be destroyed.
The following chart provides a guide for minimum acceptable oil levels "as received" from the factory. Only those components which have levels less than indicated below should have additional oil installed.
Engine - Full mark to 6 mm (.24 in.) below full mark.
Transmission
a) Automatic - With engine idling, transmission selector in "Park", vehicle on a level surface and oil temperature between 10 to 38~C the oil level on the following transmissions should be as indicated:
440-T4
Transmission: Oil level should be in middle of cross-hatch area.
125/125C
Transmission: Oil level should be slightly above full level.
All other
Transmissions: Oil level should be slightly below add level. If oil level gauge has dimples below add mark, oil level should be between these two dimples.
b) Manual 1) Lower edge of inspection plug hole on rear wheel drive vehicles.
2) Between cold level range dimples or at cold level mark on front wheel drive vehicles.
Differential - Lower edge of inspection plug hole to 9.5 mm
(.37 in.) below lower edge of inspection plug hole.
Transfer Case - Lower edge of inspection plug hole.