1985 BMW 325
300,000 MILES
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I have a radiator without a radiator cap reservoir, and I am stumped on how to fill it with coolant after flushing the system and replacing some hoses and the fan.

Again I just need to know how to fill the radiator with coolant when it has no radiator cap to poor into.
Feb 13, 2013 at 8:57 PM
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There is a small plug on the top of the radiator on one of the tanks, remove the cap and fill it from there. There might be a bleeder on the top of the thermostat housing that will needs to be opened.

Please let us know what you find so it will help others.

Best, Ken
Feb 15, 2017 at 3:00 PM