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Old 02-26-2003, 07:22 PM
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sixto sixto is offline
smoke gets in your eyes
Join Date: Jun 2000
Location: SF Bay Area
Posts: 20,126
The expansion tank is part of the pressurized system (the pressure cap is on the reservoir). You run the risk of overheating if you drive without a pressurized cooling system.

If you figure out how to plug the hole, plug the open end of the hose to the reservoir as well.

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