iv had better luck with the copper. getting less spatter and cleaner welds. this stuff is u-pol brand takes probably 5 to 10 mins to dry depending on how warm it is where you are. SEM brand also makes a decent one that works about the same. any spray on is easier to work with then brush on though. thats just a fact.
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97 Firebird Formula - 383LT1
15 Subaru WRX - 2.0L-turbo
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