My new to me 01 f150 w/5.4L engine and 147K miles came with a small oil leak. The PO thought it was the oil filter adapter gasket leaking and ignored it as it was not real bad and did not increase the oil consumption. I see these trucks can leak oil from lurking/researching here on the issue. I opted to have the local dealer do my first oil change for me ($33 bucks with MC oil and filter) and they looked for the oil leak source for me yesterday.
The mechanic thought it was the front crank seal ($190 estimate to fix), but the service manager thought maybe it was seeping from the timing cover ($780+ with new timing chain tensioners/guides). They said it was such a mess of oil everywhere, it was difficult to really tell the leak source. They put some UV dye into the oil and said to return in a week and they would look again with a UV light to try and see the leak better. They agreed it would be good to spray the lower front engine with engine cleaner to clean it up so they could see the fresh leaking oil location easier.
Today I sprayed CRC engine cleaner at the car wash and cleaned up a mess of old oil and dirt. I was stoked to have the truck start right up and not misfire after my first carwash episode which resulted in a full tune plug change from water fouling the COPs, lol.
The leak is probably leaking about 6 drops a day or so from measuring it with some cardboard the night before, so not a huge amount, just a couple of inch mess on the driveway kind of leak.
Any input on this issue? Should I just ignore it and use my power washer to clean the driveway? or mess with fixing a leak the PO ignored for a couple of years? I will let you guys know what the dealer mechanics think the leak is from when I get back to them. If it is the timing cover, any chance I can access the bolts and just snug them up or would I have to pull the covers and replace and reseal the gaskets after removing the fan, radiator, etc. I want to keep the truck a while and am worried it may worsen or damage something else. Any words of wisdom appreciated. Thanks all