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Discussion Topic:
Rdiator cap
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silverchief |
05-08-2010 @ 2:22 PM
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Senior
Posts: 524
Joined: Oct 2009
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On any old car - what problems if any might be expected from using a 7 lb radiator cap, when the owner's manual calls for a cap with 17 lbs pressure. Thanks in advance.
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ford38v8 |
05-08-2010 @ 4:43 PM
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Senior
Posts: 2771
Joined: Oct 2009
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Chief, none of our old Fords take a cap of more than 4 lbs, or the tanks may rupture. If your car manual specifies 17 lbs, you would likely lose a considerable amount of coolant with a weaker cap.
Alan
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supereal |
05-08-2010 @ 5:15 PM
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Senior
Posts: 6819
Joined: Oct 2009
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I've never seen an owner's manual for anything that called for a 17 pound radiator cap. Even 7 pounds is pushing it a bit. 4 pounds is usual. At 17 pounds, I would expect one or both radiator tanks to pop. While a pressure cap does raise the boiling point of the coolant, and can help contain overflow, it is no substitute for a system in good condition.
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