Thanks for all the input guys. What I usually end up doing is what noddybrian said, and that is to run a small bead first to float the stuff to the top, re brush and wipe with acetone, and run a larger bead over the whole thing. I didn't know but there was another process that I had missed to cleani...

Hi guys, I have a question about cleaning aluminum pipe for oil delivery trucks. Where I work, we often build new trucks, and or re pipe old trucks, and it often requires a mock up and tack phase, then we remove it and tig it on the bench. Lots of times there is a good amount of grease, oil, and pet...