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CHANGING MANUAL TRANSMISSION OILWarning: TOOLS 1/2" drive ratchet
As highlighted above, the Nissan service manual normally recommends 80W90 for ambient air temperatures below 104 deg F.
My 92 Pathfinder transmissions require API GL-4 rated gear oil, which can be hard to find. I chose to use the Red Line MT-90 Synthetic Manual Transmission oil. It costs more than regular oils ($8-$10 a quart), but it's worth every penny. Now I have a very smooth shifting tranny. It's rated for API GL-4 and has a viscosity of 75W90. I use synthetic to help shift better and as added protection. PROCEDURE 1. Drive a car for few minutes. Lift up the front of the car and put it on jacks. It's best to do this maintenance with the car level, so either also lift up the rear or lift the front just enough so you can work under there. 2. With the 1/2"
ratchet in hand, locate the fill plug and remove it.
3. Get your oil pan ready under the plug. 4. Unscrew the drain plug and let the oil drain. There's a metal bracket that gets in the way, so I had to use an open ended wrench rather than a socket. 5. Put the drain plug back in and tighten it to about 14 ft-lbs. 6. Fill the tranny with oil. It's a little tight around the fill plug. It's certainly possible to pour the oil in directly, but it's a hassle. Get a funnel with a long tube so that you can fill oil from above rather than under the engine bay. You know the tranny is full when the oil starts overfilling and starts dripping out the fill plug hole.
7. Once it's full, put the fill plug back and torque it to 18-25 ft-lbs. |
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