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Matt, Mechanical Engineer
Category: Ford
Satisfied Customers: 22907
Experience:  BEng hons Mech engineering, in auto industry 22 years
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My car is a 2.2 2012 ford mondeo diesel it said engine

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my car is a 2.2 2012 ford mondeo diesel it said engine failure the speed was getting faster and lots of grey smoke coming from the exhaust the engine is still running and I can drive it
Customer: replied 1 year ago.
it says service oil when i go to start it


this sounds like the engine is running off its own lubrication oil

diesel engines will happily run off oil once its all warm

the most likely source of the oil is from a failed turbocharger seal

if you remove the high pressure hose the other side of the compressor and inspect it for signs of oil

if you find any then the turbo will need to be rebuilt or replaced and I'd suggest to get in touch with this firm as typically a rebuild will cost a 1/3rd of a new turbo

its also well worth checking the oil level as it will have been consumed

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