Cutting oil in keggle

I drilled and soldered 1/2 inch couplings in my keggle and there is some cutting oil inside of them what is the best way to clean them out

 

Bar keepers friend.

 

Detergent and a little elbow grease. I think of BKF as slightly abrasive polishing cleaner more so than for breaking down oils.

 

Next time...just use veggie oil. Works great and standard dish detergent cleans it up in one swipe.



Honestly, I use used fryer oil or motor oil as my cutting oil for about everything now. This includes when I am notching roll cage tubing (lots of cutting oil). The fryer oil is for when I am indoors and just doing a little bit and want the clean-up of the work area and my clothes to be easy. The used motor oil is for when I have the whole bending and notching equipment set up in the driveway and can sprinkle kitty litter around preemptively.