Recommended Fluid
Warner T19B transmissions use SAE 30 or SAE 50 engine oil, depending upon ambient air temperatures. If vehicle will be operated at temperatures below 0°F (-18°C), SAE 30 should be used. SAE 50 should be used if temperatures are consistently above 0°F (-18°C). Use type "F" automatic transmission fluid in all transaxles. Use DEXRON-II type "D" automatic transmission fluid in the T5-OD 5-speed transmission.
In all other transmissions, use SAE 80W or SAE 90W multipurpose gear lubricant of API GL-5 quality or better.