DO-IT-YOURSELF MAINTENANCE - ENGINE AND CHASSIS
Changing the Engine Coolant		 Do-It-Yourself Maintenance - Engine and Chassis - Check the Engine CoolantDo-It-Yourself Maintenance - Engine and ChassisDo-It-Yourself Maintenance - Engine and Chassis - Checking and Replacing the Air Filter ElementSupra Handbook
 

  1. Drain the cooling system and flush it out with water
    1. Park the vehicle on a level spot, where the coolant can drain into a suitable disposable container.
    2. Remove the radiator cap and loosen (turn counterclockwise) the two drain plugs.

    CAUTION:

    To prevent burning yourself, do not remove the radiator cap or loosen the drain plugs if the engine is hot.

  1. Close the two drain plugs and fill the system with coolant. Install the radiator cap.
    1. Make sure that both drain plugs are securely tightened.
    2. Pour the proper ammount of antifreeze or anticorrosive into the radiator. Then fill it with clean demineralised or distilled water until the radiator is full.
      NOTICE:
      Add only demineralised or distilled water to fill the radiator.
    3. Wait for a few minutes and add water again in small quantities until the water level does not drop.
    4. Start the engine, and top up the radiator with water. Fill the resevoir half full.
    5. Install the radiator and reservoir caps and double-check that the drain plugs are not leaking

    NOTICE:
    If you spill some of the coolant, be sure to wash it off with water to prevent it from damaging the parts or the painting.
Coolant type selection
Your coolant must contain either ethylene-glycol antifreeze or anticorrosive.
Ethylene-Glycol antifreeze is the antifreeze contained in the coolant your new Toyota is delivered with. In addition to preventing freezing and subsequent damage to the engine, this will prevent corrosion.
Anticorrosive may only be used in regions where there is no possibility of the coolant freezing. Use Toyota "RADIATOR CONDITIONER" anticorrosive or equivalent.
Read the antifreeze or anticorrosive container for information on freeze or corrosion protection. Follow the manufacturer's directions for how much to mix with water. The total capacity of the coolant system is given in Part 8. As for antifreeze, we recommend 50% solution be used for your Toyota, or a sufficient quantity to provide protection to about -35oC (-31oF).
NOTICE:
Do not use alcohol type antifreeze or plain water alone.