Got a question about some work on my truck that I'm going to have to do or have done. Heres what happened, last week sometime I added a quart of oil to the engine and somehow forgot to put the oil cap back into the valve cover. Yesterday I was coming home and driving on the interstate doing about 74 mph when the oil pressure gauge dropped to zero. Luckily for me I had two quarts with me, but noticed the missing oil cap. I was about four miles from a Ford dealer so I went there and bought another cap, cost $10.00. After it was installed, no more oil leak, well a lot slower leak. I suspect I have a crankcase seal going out, but haven't looked yet. If thats the case, am I'm going to have to pull the crank to be able to replace the seals? It's a 1999 Ranger 3.0ltr engine and I love the truck!