Notice: Our service center will be closed for repairs from December 3rd - 17th and we are currently running a 1-2 business day turnaround on repairs once we receive your unit so please keep this in mind when sending your unit in for repairs to prevent delays. Please retain a copy of your tracking number when shipping your unit in to us for repairs since we do not send out notifications of your packages arrival.
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.