M/T - Proper Fluid
88olds11SUBJECT PROPER SERVICE FLUID FOR MANUAL
TRANSAXLE
MODELS/YEARS 1987-88 HM-282 (MG2) 5-SPEED
NUMBER: 88-T-37
CORP. REF. NO.: 877208
DATE: March 1988
SECTION: 7A
VEHICLE APPLICATIONS:
1987 Firenza 1988 Cutlass Calais 1988 Cutlass Supreme
BULLETIN COVERS:
Proper service fluid for the HM-282 is important to prevent gear clash and/or increased shift effort.
FIGURE 1 - HM-282 TRANSAXLE IDENTIFICATION INFORMATION RPO MG1/MG2:
DATE OF PRODUCTION CHANGE: (Figure 1)
1988 model year HM-282 5-speed manual transaxles are factory filled with synchromesh transmission fluid (STF). This new fluid aids in reducing cold shift effort in this application.
SERVICE ACTION:
Reference chart below for the proper service fluid.
NOTE: 1. It is permissible and preferred to use synchromesh transmission fluid (STF) in past model HM-282 transaxles. STF will aid in reducing cold shift effort.
2. Synchromesh transmission fluid (STF) can be mixed with manual transmission fluid, but as the portion of manual transmission fluid increases, so does the shift effort.
IMPORTANT: DO NOT REFILL THE HM-282 WITH ENGINE OIL OR AUTOMATIC TRANSMISSION FLUID. THESE HAVE DIFFERENT FRICTION COEFFICIENTS AND DO NOT WORK WELL WITH THE SYNCHRONIZERS, CAUSING GEAR CLASH AND/OR INCREASED SHIFT EFFORT.