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adding water to Lexusthe only way is to fill up the res. tank then run engine on top of motor there is a plug behind top hose loosen this and run engine to get air out of system water will come out also if it keeps making bubbles there is still air in system this is a easy fix there is no radiator cap this is only way
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Earn +20 ptsQ: How do you refill engine coolant of 1992 Lexus LS400?
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