I called all my auto shops locally and the only one to carry an oil pressure tester was NAPA. Picked it up for $80 bucks, and none of the fittings allowed it to fit... Spent two hours at Lowe's and calling plumbing stores and none of them had the right size fitting either. Had to return the tester kit.

Can anyone tell me what oil pressure tester they bought that fit?

 

Have at it >> 12 PC Engine Oil and Transmission Pressure Tester Gauge Diagnostic Tool 140 PSI | eBay

 

Thanks a lot! Just ordered it. Really appreciate it.