Some time ago I was having trouble with freeze plugs. Replaced the one that was leaking, and the repair lasted one year. the new one started to leak as well. My coolant has the decent amount of antifreeze, so it's a odd thing that just one plug keeps giving trouble. I have a custom plug made, machined out of aluminum (solid, flush with the block). It sealed ok, and I doubt it would give me corrosion trouble again. My fear is about the aluminum expansion being different from the cast iron of the block. What do you thing guys, is there a chance of the plug ruins the block? It was press fit, with epoxy sealer.



Any imput would be very appreciated.

Túlio Lazzaroni "FORD", Florianópolis SC Brasil.

'74 Ford Galaxie 500 292 V8

'82 Ford Galaxie Landau 302 V8

'98 Chevrolet S10 4.3 V6

'01 Ford Focus 1.8 Zetec