Notice

NOTICE: Our Labor Day Closure Dates are from Aug 28th - Sept 2nd. We recommend having your units in to us for repairs by the 22nd to help avoid delays in processing your order.

Occasionally the oil sender unit will short out internally and cause the needle to peg out but return to 0 when the key is turned off.
If you suspect a faulty sender, unplug the sender and inspect for oil leakage and monitor the gauge's reaction with it unplugged to see if you get the same reaction.