T&T: Fluctuating oil pressure guage on Ford-Lehman 135

[Brent Hodges]

Hi Bob!
As someone else suggested, it is almost certainly a loose connection or bad 
sender. I had one engine start reading low and switched the senders, engine 
for engine and the symptom changed engines with it. Seems like you have a 
single engine, and if so, obviously this isn't an option. The other thing I 
did was go to Autozone and buy mechanical oil gauges and mount them in the 
engine room. Very comforting to view when doing the engine room checks and 
see what the oil pressure actually is!

Brent Hodges