I was wondering, do I need a cap on my expansion tank for the radiator?
Feb 16, 2023 at 12:30 PM
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JACOBANDNICKOLAS
CAR REPAIR CONTRIBUTOR
110,190 POSTS
Hi,
Because the radiator cap is the pressure release cap, in theory, the reservoir is only used as a holding tank. So, in theory, it isn't needed other than to prevent coolant from splashing out. However, I would recommend having one.
Let me know if you have other questions.
Take care,
Joe
Feb 16, 2023 at 8:25 PM
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