Mondeo 2.5T engine oil horror show
Discussion
I recently bought my latest car, an 07 plate Mondeo 2.5T, with the Volvo 5 pot 2.5l Duratec engine. The previous owner was an old giffer who only drove it at 30 to the shops and to church on Sundays, hence he sold it. He'd apparently never heard of these things called "services" because the service book was blank and the receipts I got with the car had nothing for the past 4 years, aside from a set of front brake pads.
So, all has been well for the 4 months I've had the car, and it's been to the stealer for a full service, which picked up no faults whatsoever. However, I was driving last week when the engine started making noises which instantly told me something was amiss.
When I got home I quickly found that the problem was the PCV diaphragm failing, which is a common problem with this engine, and there's loads of information about cause and cure.
Being handy with a set of spanners I set about changing the oil filter housing. The job itself isn't too bad but when I got the housing out I found the lowest oil port completely blocked with crap. And I mean it was caked in the stuff. I used a bottle brush to scrape what I could find out of the port of the block, replaced the housing, and the engine runs fine now.
I'm slightly concerned that there is still some solid sludge floating around in the engine so I'm going to change the oil and filter every 1500 miles a few times to try and flush out the crap.
One of the guys in work suggested using an engine flush product to assist in the crap removal. I've always thought these were snake oil, but I've also never seen as much sludge in an oil system, so would it be worth using a flushing solution, or should I just stick to regular, short interval oil changes for a while?
So, all has been well for the 4 months I've had the car, and it's been to the stealer for a full service, which picked up no faults whatsoever. However, I was driving last week when the engine started making noises which instantly told me something was amiss.
When I got home I quickly found that the problem was the PCV diaphragm failing, which is a common problem with this engine, and there's loads of information about cause and cure.
Being handy with a set of spanners I set about changing the oil filter housing. The job itself isn't too bad but when I got the housing out I found the lowest oil port completely blocked with crap. And I mean it was caked in the stuff. I used a bottle brush to scrape what I could find out of the port of the block, replaced the housing, and the engine runs fine now.
I'm slightly concerned that there is still some solid sludge floating around in the engine so I'm going to change the oil and filter every 1500 miles a few times to try and flush out the crap.
One of the guys in work suggested using an engine flush product to assist in the crap removal. I've always thought these were snake oil, but I've also never seen as much sludge in an oil system, so would it be worth using a flushing solution, or should I just stick to regular, short interval oil changes for a while?
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