See Figure 1
Use engine oil for all of the manual transmissions, except for the Borg-Warner T5R and the NV1500 (1996 Hombre). Make sure to use engine oil of the correct viscosity for these transmissions, as follows:
High temperature refers to areas where ambient temperatures of 90°F (32°C) and higher are regularly encountered.
The Borg-Warner (B-W) T5R is found on Rodeo models with the V6 engine. The 1991-93 B-W T5R uses DEXRON®II automatic transmission fluid, whereas the 1994-96 B-W transmission uses DEXRON® III automatic transmission fluid.
The NV1500, which stands for New Venture Gear 1500, is found on the 1996 Hombre trucks, and is the only manual transmission available for these vehicles. The NV1500 uses General Motors Synchromesh transmission fluid and 5 percent modifier (The Hombre is essentially a Chevrolet S-10 truck).
FLUID LEVEL CHECK
The oil in the manual transmission should be checked every 12 months or 15,000 miles (24,000 km).
- Allow the engine to reach normal operating temperature. Raise the vehicle and safely support with jackstands, then remove the filler plug from the side of the transmission housing.
- If lubricant begins to trickle out of the hole, there is enough and you need not go any further. Otherwise, carefully insert your finger (watch out for sharp threads) and check to see if the oil is up to the edge of the hole.
- If not, add oil through the hole until the level is at the edge of the hole. Most engine oils come in a plastic bottle with a neck, making additions simple. Use a turkey baster if the area does not permit access.
- Install the filler plug and tighten to 20 ft. lbs. (27 Nm). Lower the vehicle, then run the engine and check for leaks.
DRAIN AND REFILL
See Figures 2, 3 and 4
Before draining the fluid from the transmission, drive the vehicle until the engine reaches normal operating temperature. This ensures that the fluid in the transmission is warm, which helps the fluid drain easier and hold the sediment in suspension.
For all transmissions except for the Borg-Warner T5R, replace the transmission fluid at the first 15,000 miles (24,000 km) and then every 30,000 miles (48,000 km) thereafter. The Borg-Warner T5R transmission does not require periodic changing of the transmission fluid.
- Raise the vehicle and support safely on jackstands. Place a fluid catch pan under the transmission drain plug.
- Remove the fill plug from the side of the transmission, then remove the drain plug. Be cautious when removing the drain plug: the transmission fluid can be very hot. Allow the transmission fluid to drain into the pan.
- Install the drain plug and tighten to 20 ft. lbs. (27 Nm) for all models except the 1996 Hombre, which requires 27 ft. lbs. (37 Nm).
- Refer to the manual transmission fluid recommendations for the proper viscosity of engine oil, or type of transmission fluid to be used for the T5R and NV1500 transmissions. Fill the transmission by pouring the new fluid through the fill plug hole in the side of the transmission. Fill until the fluid starts to dribble out of the filler hole. Install the fill plug to 17 ft. lbs. (23 Nm), then lower the vehicle.