How often should water be added to the engine radiator?

[GabrielleLee]

There is no fixed interval for adding water to the engine radiator, as it depends on the vehicle usage. Here are the engine maintenance measures: 1. Regularly check the engine condition: Inspect cylinder pressure or vacuum, clean carbon deposits in the combustion chamber and grind valves if necessary, adjust valve clearance, and check for oil leaks from oil seals and the rear crankshaft bearing. Check and tighten the cylinder head, intake and exhaust manifolds, and muffler bolts and nuts. Inspect the engine's mounting condition, as well as the connection and tightness of the flywheel housing and cylinder block. 2. Replace filters: Clean or replace the coarse and fine oil filters, remove and clean or replace the oil pan, clean the oil pump and oil strainer, inspect or replace bearing shells, and reinstall and tighten the oil pan.