Engine Mechanical problem
2000 Ford F150 V8 Four Wheel Drive Automatic 150000 miles
When I first start up my truck in the morning, the oil pressure gauge will first move to its normal position. Then after about 5 seconds, the pressure drops for a couple of seconds, then the pressure returns to normal. The pressure goes up and down for about 20 seconds, then it starts working normally. Is my oil pump starting to fail?