This is a common problem with some of the earlier aluminum replacement header tanks. There is no reliable fix for this problem you will need to purchase a replacement tank. "Happy New Year" DMC Joe / De Lorean Services / <dmcjoe@xxxx> Web Site: <http://www.deloreanservices.com> ----- Original Message ----- From: Josh Haldeman <haldeman.4@xxxx> To: <dmcnews@xxxxxxxxxxx> Sent: Sunday, January 02, 2000 6:37 PM Subject: [DML] Overflow tank question > Dear List, > I recently discovered that my overheating problem is being caused by > a bad seal at the juncture between the coolant overflow tank (aluminum > in this case) and the radiator cap. I just replaced the cap, but am > still having the problem. > My question therefore is does anyone know of a product that will > seal or coat the overflow tank opening to provide a tighter/better fit > for the cap? (I'm thinking along the lines of a 3M product here) Is this > even possible? Is there a better solution? HELP!! > Thanks, > Josh > VIN 5102