1. General (3) Cooling water Use clean drinkable water (tap water or rainwater) as the cooling water. - [NOTICE] Always add antirust or antifreeze in the cooling water. Especially in cold weather, be sure to add antifreeze to prevent freezing. Since scale or rust will be generated in the water piping when only clear water is used, the cool- ing performance is worsened. In a cold weather, the cooling water may be expanded by freezing to cause damage to the cooling system parts. 1) Rust preventive agent Be sure to add the rust preventive agent to the cooling water. However, do not use it in cold weather because freezing will occur.
When you use a rust preventive agent sold on the market, be sure to follow the mixing rate designated by the manufac- turer. Replace the rust preventive agent once a year. [NOTICE] Excessive addition of antifreeze will worsen engine cooling. Always observe the mixing rate speci- fied by the manufacturer for each am- bien t temperature. 2) Antifreeze In cold weather, be sure to add the anti- freeze to prevent freezing. If you use antifreeze, addition of the rust preventive agent is unnecessary. Anti- freeze can be used throughout the year. The mixing rate should be between 30% and 55%.
Lowest atmospheric temperature “C j -45;; ( -20 1 -25 I Mixing rate % 1 30 / 35 / 40 When you use an antifreeze sold on the market, be sure to follow the mixing rate designated by the manufacturer. Replace the antifreeze once a year. l-7