Hey guys ! So i have a 97 40th anniversary with 119k miles on it. About a few days ago I noticed the oil light come on for two seconds then went off. I pulled home, checked the oil. FULL ON OIL ! Very weird. My oil pressure on a cold start is on 3/4.. Once warmed up 1/4.. After awhile while driving around at a red light lets say .. Drops to L .. Driving at 2k rpm warmed up at a hairline over 1/4 .. Is this normal ? Oil light will come on at random ( when driving) then shut off a few seconds later. My truck is in tip top shape so really have no idea what this is. My guess is that I need a new oil pressure sender ? Please advise ..