For 1990-2009 cars

Warning: Refer to Checking Hot Transmission Fluid through Drain Plug Hole Warning in the Preface section.

1. With the vehicle on a level surface and the fluid in the transaxle cold, remove the filler plug and check the fluid level. The fluid should come to the bottom edge of the plug hole.
2. If the level is low, add SAE 75W-85 GL-4 manual transaxle fluid through the filler plug hole until the fluid begins to run out.
3. Reinstall the filler plug and tighten to 28 N·m (21 lb ft).
4. If the fluid is contaminated, drain the oil after removing the differential gear cover.