Originally Posted by 6PAX
Originally Posted by metallicareload
Is the outside of the tube coated with something? I now always sand the outside of the tubing where you'll be flaring.


No, it's just bare steel. No lubricants or anything on it.


This wouldn't happen to be one of the stainless steel sending units would it ? If so, cutting the tube it with a normal tube cutter will work harden the end. in addition the tubing type should be the annealed type to soften it.
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