* Automatic Transmission: Consult your owner's manual. The specific type and weight of ATF (Automatic Transmission Fluid) will be listed there. Don't just guess – using the wrong ATF can severely damage the transmission.
* Manual Transmission: Again, check your owner's manual. It will specify the type and weight of gear oil needed for the manual transmission. Common types include GL-4 or GL-5, and the weight (e.g., 75W-90, 80W-90) will be specified.
In short: Look at your owner's manual. It's the only reliable source for this information. The wrong fluid can cause significant damage and costly repairs.