pics or it didn't happen.

And don't mess with the oil filter... much more effective to loosen oil pan bolt, and easier to get to. Loosen bolt til allllmost dripping. If he drives more than 5 miles, the vibrations will wiggle it loose, and I can guarantee you he won't notice the looong line of oil dripping out of his car until it goes KABOOM on 85.

Batteries in gas tank... also effective.