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Jim Brierley · 08-14-2019, 11:05 AM

Copper lines: Copper will work harden IF it is allowed to flex or vibrate. In the 50's, etc., most production cars had a small copper line from the engine to the oil pressure gauge, I was a truck mechanic from 1956 to 1976 and never saw one crack or break. Trucks used copper air-brake lines, etc. etc. Copper has gotten a bad reputation, undeservedly! The bad reputation has been passed on by those that have never been associated with it.

08-14-2019, 11:05 AM	#13
Jim Brierley Senior Member Join Date: Jun 2010 Location: Temecula, CA Posts: 4,087	Re: Flared copper washers for gaskets? Copper lines: Copper will work harden IF it is allowed to flex or vibrate. In the 50's, etc., most production cars had a small copper line from the engine to the oil pressure gauge, I was a truck mechanic from 1956 to 1976 and never saw one crack or break. Trucks used copper air-brake lines, etc. etc. Copper has gotten a bad reputation, undeservedly! The bad reputation has been passed on by those that have never been associated with it.