LS - 1st and 2nd Gen (1990-2000) Discussion topics related to the 1990 - 2000 Lexus LS400

Radiator drain

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Old 08-15-18, 02:16 AM
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99LSprobs
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Default Radiator drain

Can someone tell me how to drain out the resivour to the radiator? All I have is water in there and I need to put some coolant but have no idea how, it’s been over heating constantly and I’ve just figured that out by other posts, thanks on google on why it may be over heating. Also what type of coolant do I need I’ve never done this

Last edited by 99LSprobs; 08-15-18 at 02:22 AM.
Old 08-15-18, 01:03 PM
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sha4000
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Remove the hose and it will drain right out.
Old 08-15-18, 01:20 PM
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99LSprobs
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Oh gosh.... well I did the drain plug and I let it all drip out then I just put coolant in!! I didn’t do anything with a hose..... do I have to do this hose u mention???
Old 08-15-18, 01:50 PM
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Did u drain the engine?
Old 08-15-18, 01:52 PM
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no.... idk how to do that
Old 08-17-18, 07:04 AM
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sha4000
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There is a hose connected to the top left side of the radiator that run to the reservoir. Disconnect it from the reservoir and let the water drain out.
Old 08-17-18, 08:56 AM
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deanshark
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Originally Posted by 99LSprobs
no.... idk how to do that
There are 3 drains. 1 on bottom of radiator and 2 on the engine. This link shows where they are and how to do everything. http://www.lexls.com/tutorials/cooling/coolant.html
That is for a 90-94 but I'd guess the engine drain plugs are in the same location, or very close, for all years.
Only thing I would change about that link would be the brand of coolant. Use Toyota RED.
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