So i accidentally discovered a property of etch primer that i hadn't known before - Its ability to loosen nuts.

On the weekend I was replacing the master cylinder and i couldn't get the clutch pipe to budge from the adaptor. After trying for a while and accidentally twisting the pipe slightly, i left over and grabbed a can of what i thought was plus gas. I sprayed it all over the pipe/ adaptor and i accidentally painted it all grey!!

Anyway, i quickly wiped it away and to my surprised, the adaptor and the pipe loosened straight away.

Probably wouldn't recommend it, but worth considering

Etch primer contains acid. Splash it in your brew and it will loosen your nuts aswell.