IDENTIFICATION
| Vehicle Model | Transmission Model (RPO) |
|---|---|
| "C" & "K" Series | Muncie 85mm 5-Speed O/D (MG5), NVG 4500 5-Speed O/D (MT8), Muncie 117mm 4-Speed (M20) |
| "P" Series | NVG 4500 5-Speed O/D (MT8) |
| "R" & "V" Series | Muncie 117mm 4-Speed (M20) |
| "S" & "T" Series | Warner 77mm 5-Speed (T5) |
TRANSMISSION APPLICATION
SERVICE INTERVALS
Note. There are 2 light duty truck emission control classifications: Light Duty (up to 8600 lbs. Gross Vehicle Weight) and Heavy Duty (vehicles more than 8600 lbs. GVW).
Transmission
On all light duty vehicles, check transmission fluid every 12 months or 7500 miles. On heavy duty vehicles, check fluid level every 12 months or 6000 miles. Periodic draining and refilling is not required.
Transfer Case
Check transfer case lubricant at every oil change or every 12 months. Under severe conditions, check more frequently.
CHECKING FLUID LEVEL
Remove filler plug. Lubricant should be level with bottom of filler plug hole. Add as necessary.
The 77mm 5-speed and 4500 5-speed use Dexron-II ATF. The 117mm 4-speed uses API GL5 SAE 80W90 gear lubricant. Manufacturer recommends using Manual Transmission Fluid (1052931) in 85mm 5-speed.
Transfer cases all use Dexron-II ATF.
FLUID CAPACITY
Note. Capacities listed in following charts are approximations. Determine correct fluid level at filler plug hole.
| Application | Quantity |
|---|---|
| 5-Speed (77mm) | 4.4 pts. (2.1L) |
| 5-Speed (85mm) | 3.6 pts. (1.7L) |
| 4-Speed (117mm) | 8.4 pts. (4.0L) |
| 5-Speed (4500) | 8.4 pts. (4.0L) |
TRANSMISSION REFILL CAPACITIES
| Application | Capacity |
|---|---|
| NP-205 | 5.2 pts. (2.5L) |
| NP-231 | 2.2 pts. (1.1L) |
| NP-241 | 4.5 pts. (8.5L) |
| Borg-Warner (1370, 4470 & 4472) | 2.9 pts. (1.4L) |
TRANSFER CASE REFILL CAPACITIES
ADJUSTMENTS
Note. Manual transmissions have no shift rods. The shift lever mounts directly to top of transmission and is not adjustable.