Root cause of high oil consumption in VEA diesel engines?

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Root cause of high oil consumption in VEA diesel engines?

Diesel Engines A forum dedicated to diesel engines fitted to Volvo cars. See the first post in this forum for a list of the diesel engines.

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Apr 13th, 2021, 18:19	#2
JamboT New Member Last Online: May 20th, 2024 13:46 Join Date: Jul 2018 Location: Mold	I agree, I think the oil control ring is a problem. I suspect that once it gets clogged, you're then burning oil (small amounts), in my case it has led to a small oil leak as well due to positive crankcase pressure that is caused. I've had my D4 for about 3 years now (2nd hand). It has always needed 0.5L oil every 1k-1.5k miles, I've learned to live with that to be honest. The root cause? I wonder if it is related to the oil Volvo recommends. The 0W-20 stuff seems to be very 'thin', and I'm guessing as long as that is used from new, it gets through the oil-ring draining system just fine. At some point, I suspect a previous owner took it to a non-specialist who put a standard 5W-30 (or similar) oil in which would be thicker and clog it up. I just budget for the extra oil annually and fill as required myself.

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