- Joined
- May 8, 2025
- Messages
- 27
This UOA is from my 2001 Mustang Bullitt with 278k miles, pretty much all of the 3k miles on this OCI was highway commuting and was not driven too hard. Oil filter was a Motorcraft FL820S, I haven't cut it open yet but I will, and I will post a link to it on this post as well. I have changed from an aftermarket CAI with a K&N filter back to the stock Bullitt intake assembly with a Bosch Workshop filter and now a MC filter. However the intake assembly was only on for 1k miles of this OCI, the Bosch was in for 810mi and the MC the rest. Magnet on the end of my drain plug caught quite a bit of very fine powder, I didn't really see any chunks.
Previous Report: https://bobistheoilguy.com/forums/t...-1-4k-mi-2001-mustang-bullitt-276k-mi.395634/
Here is the material stuck to the drain plug.
And here is the material spread out on a piece of paper. It is super fine and sludgy and smeared almost like paint, I'm curious to see what the filter looks like.
So the Fe is down 6ppm from last time so I guess that's good. Al is up 11ppm, Cu is up 3ppm, Si is down 1ppm, Na is up 13ppm, and K is up 7ppm. So overall wear has increased quite a bit, especially on Al. I don't suspect to have any issues with my pistons, I did a compression and leakdown test at 276,560mi and the results were very good. So I'm hoping that still hold's true and all the metal is coming from the timing guides, tensioners, and chains. Cu I assume only comes from bearings.
I do have a coolant leak at the front passenger side of the intake manifold, and I'm hoping this is where my high levels of Na and K are coming from. I did have an oil leak at the oil filter adapter gasket and I replaced that at 276,709mi, this could have also been causing coolant intrusion in the oil.
So what are the genius's thought's on this UOA? I know @dnewton3 is very knowledgeable about these engines if you could chime in with your thoughts. Thanks guys!
Previous Report: https://bobistheoilguy.com/forums/t...-1-4k-mi-2001-mustang-bullitt-276k-mi.395634/
Here is the material stuck to the drain plug.
And here is the material spread out on a piece of paper. It is super fine and sludgy and smeared almost like paint, I'm curious to see what the filter looks like.
So the Fe is down 6ppm from last time so I guess that's good. Al is up 11ppm, Cu is up 3ppm, Si is down 1ppm, Na is up 13ppm, and K is up 7ppm. So overall wear has increased quite a bit, especially on Al. I don't suspect to have any issues with my pistons, I did a compression and leakdown test at 276,560mi and the results were very good. So I'm hoping that still hold's true and all the metal is coming from the timing guides, tensioners, and chains. Cu I assume only comes from bearings.
I do have a coolant leak at the front passenger side of the intake manifold, and I'm hoping this is where my high levels of Na and K are coming from. I did have an oil leak at the oil filter adapter gasket and I replaced that at 276,709mi, this could have also been causing coolant intrusion in the oil.
So what are the genius's thought's on this UOA? I know @dnewton3 is very knowledgeable about these engines if you could chime in with your thoughts. Thanks guys!
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