S40 S 2006 2.0L Petrol Burning lots of oil.

epic9090 · Feb 16th, 2024, 13:16

Volvo S40 S 2006 burning about 0.75L every 160 Miles, well out of spec.

Was running completely fine but noticed a squeal/whine on startup that goes away/reduces after warming up.

Saw lots of other posts about PCV valve and wondered if it was perhaps blocked. Oil Cap does seem to be pushing out some air but squealing didn't seem to go down. No engine warning lights (Will do a diagnostics check at some point).

Car has 146,000 Miles. Gonna double check the oil cap with the glove test soon.

Thanks in advance!

PierreC · Feb 16th, 2024, 14:42

Can't confirm that the PCV on the S40 is causing this but I have had this on both a 5 cylinder XC70 as well as my 6 cylinder XC60 - the latter I caught well before it became a problem.

So it is a most likely cause of your symptom. BTW it is not burning the oil - it probably pushes it out somewhere, In my XC70 case it pushed it out and eventually ruptured the cam seal

Feb 16th, 2024, 13:16	#1
epic9090 New Member Last Online: Mar 14th, 2024 09:13 Join Date: Feb 2024 Location: Basildon	S40 S 2006 2.0L Petrol Burning lots of oil. Volvo S40 S 2006 burning about 0.75L every 160 Miles, well out of spec. Was running completely fine but noticed a squeal/whine on startup that goes away/reduces after warming up. Saw lots of other posts about PCV valve and wondered if it was perhaps blocked. Oil Cap does seem to be pushing out some air but squealing didn't seem to go down. No engine warning lights (Will do a diagnostics check at some point). Car has 146,000 Miles. Gonna double check the oil cap with the glove test soon. Thanks in advance!

Feb 16th, 2024, 14:42	#2
PierreC Member Last Online: Apr 22nd, 2024 15:42 Join Date: Apr 2013 Location: Pretoria, South Africa	Can't confirm that the PCV on the S40 is causing this but I have had this on both a 5 cylinder XC70 as well as my 6 cylinder XC60 - the latter I caught well before it became a problem. So it is a most likely cause of your symptom. BTW it is not burning the oil - it probably pushes it out somewhere, In my XC70 case it pushed it out and eventually ruptured the cam seal __________________ Pierre Current: 2016 V40 D4 AT & 2010 XC60 T6 AT Previous: 2015 V40 D3 AT, 2007 S60 2.5T MT, 2004 S60 2.0T MT, 2002 XC70 2.4T AT Autotech Tune, 1996 850 GLT MT

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