GMC 1976 ZEO 6083 Maintenance Manual page 14

CHECKING OIL LEVEL
The engine oil should be maintained at the proper
level . The best time to check it is before operating the
engine or as the last step in a fuel stop . This will allow
the normal oil accumulation in the engine to drain
back into the crankcase. To check the level, remove
the oil level dipstick located inside the left front ac-
cess door (See figure 13) wipe it clean and reinsert it
fully for accurate reading. The oil level dipstick is
marked "FULL" and "ADD." (figure 14) The oil
level should be maintained within the margin, nei-
ther going above the "FULL" line nor below the
"ADD" line . Reseat the dipstick firmly after taking
the reading. One (1) quart will raise the oil level from
"ADD" to "FULL."
NOTE :
The oil dipstick is also marked "USE SE
ENGINE OIL," as a reminder to use only SE
oils .
TRANSMISSION
The transmission dipstick and fill tube is located
under the engine access cover on the left side of the
engine . (figure 15)
Use only automatic transmission fluids identified
with the mark DEXRON II. These fluids have
been specially formulated and tested for use in the
automatic transmission, and are available from the
GMC Motor Home service outlet or local service
station.
Check the fluid level at each engine oil change
period . To make an accurate fluid level check:
1 . Drive vehicle several miles, making frequent
starts and stops, to bring transmission up to normal
Figure 14-Engine 01 1 Dipstick
GENERAL INFORMATION 0- 13
Figure 15-Removing Transmission Dipstick
operating temperature (approx. 190-200°F.)
(87.8°C.-93 .3°C .).
2. Park MotorHome on a level surface.
3 . Apply parking brake.
4. Place selector lever in "PARK" and leave en-
gine running.
5. Open all but the two rear windows, then
remove engine cover.
6. Remove dipstick and wipe clean.
7 . Reinsert dipstick until cap seats.
8 . Remove dipstick and note reading. (figure 16)
If fluid level is at or below the "ADD" mark, add
sufficient fluid to raise the level to the "FULL"
mark . One pint raises the level from "ADD" to
"FULL." Do not overfill . Refer to the Maintenance
Chart for servicing schedule .
Figure 16-Transmission Dipstick