Why You Need a Ford Super Duty Mechanic Who Isn’t Lazy

By Brett Foote - November 11, 2025

This Ford Super Duty has visited several shops and had several repairs made in an attempt to fix an oil leak in a very expensive guessing game.

While many of us tend to turn our own wrenches when it’s time to fix or modify a vehicle, it’s safe to say that this isn’t applicable when it comes to the majority of folks. Rather, most look to an independent repair shop or dealership when trouble surfaces, particularly, and it also stands to reason that we should be able to trust those folks know what they’re doing. Of course, that isn’t always the case, and these days, a lot of techs are throwing darts at a proverbial dart board during the diagnostic process – which is precisely what happened with this Ford Super Duty.

As our host explains in this video from the YouTube channel Rainman Ray’s Repairs, this 2012 Ford Super Duty F-250 recently rolled into his shop after having visited several others, all in an attempt to diagnose and repair an oil leak.

Trouble is, all of those previous shops were only able to give him maybes and might be’s. They fired the parts canon a couple of times, but never did a thorough diagnosis. This, in spite of the fact that it’s pretty easy to figure out where oil leaks are coming from – you can see them, after all.

In this case, the Ford Super Duty – which is equipped with the 6.7-liter Power Stroke diesel – ended up getting a few repairs, including the crankcase ventilation system box, a turbo, and a head gasket, but none of those things fixed the problem, and just resulted in a bunch of money being thrown away, essentially. Thus, our host starts the diagnostic process by lifting this heavy beast up in the air.

Here’s the important part for Super Duty owners —

As terrible as it is to get a mechanic who makes presumptive guesses without doing an actual diagnosis, it can be flat-out dangerous to also find a mechanic who approaches something like an oil leak by fixing the easiest stuff first without fully diagnosing the larger issue. In the case of this video’s Super Duty, everything’s coated with oil. The upper and lower oil pans clearly need service. There’s also residue on the oil pressure sending unit, oil filter, diesel particulate filter, and even the cylinder head.

But are those the main concerns for this truck that’s also blowing black smoke?

No, by diving into the diagnosis further, our host is able to conclusively prove that the 6.7L Power Stroke’s turbo seal is leaking, a situation that had it been ignored — if a lesser mechanic had just replaced a few engine gaskets — could have caused a catastrophic diesel runaway situation that could have destroyed the whole truck. Or worse.

Ultimately, it’s very clear from this fairly quick and easy diagnosis that too many mechanics simply refuse to do their jobs. They play guessing games, go off hunches and past experiences that may not apply, and/or fix easier-to-see problems and send the customers on their way. All things that will cost you money and time, and possibly even your whole truck.

So be careful out there, Ford Truck Enthusiasts. There’s no easy way to do it, but the ultimate goal is to find a quality mechanic who puts in the work up front to properly diagnose an issue. Which is why paying for a thoughtful diag fee can end up saving you money compared to a quick freebie.