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secondchance · 12-19-2022

I would start with replacing the coolant reservoir cap since they are pretty cheap. I think they are 14 or 15 PSI. Personally, I would stay with AC Delco OEM cap.

https://www.ebay.com/itm/17541507958...6cd5670f5e771b

Also, are you running silicone hoses by any chance? If so, take time and tighten all hose clamps. Hose clamps tend to loosen (or the hose deforms) andseep minute amount of coolant.

12-19-2022	#2
secondchance Join Date: Aug 2006 Location: McLean, VA Posts: 3,730	Re: Help With Coolant overflow I would start with replacing the coolant reservoir cap since they are pretty cheap. I think they are 14 or 15 PSI. Personally, I would stay with AC Delco OEM cap. https://www.ebay.com/itm/17541507958...6cd5670f5e771b Also, are you running silicone hoses by any chance? If so, take time and tighten all hose clamps. Hose clamps tend to loosen (or the hose deforms) andseep minute amount of coolant.