Excessive Oil consumption 1.9Tdi

[anthony72]

Hi all,

Im a bit new to this but hope someone can point be in the right direction.

 I have a 2006 1.9tdi Octavia. BKC engine with 450,000KM. ( motorway driving) Its driving like a dream and I do most of my own maintenance. However it is progressively using far too much oil. I have been using high quality VW507 spec, fully synthetic 5W30 oil from new and service the car very regularly.  I havent noticed any excessive smoke from the exhaust during driving but there is a lot of carbon on the end of the exhaust pipe. There is a small bit of blue/grey smoke on startup.

Over last few months the oil consumption has risen quite a lot to about a litre every 2 months which equates to approx 8,000 km. I had an issue with the  EGR valve which was clogged with carbon. I celaned this out thoroughly but it wont reset so that will probably  have to be changed.

 

I am thinking along three lines.

   Piston ring wear.

   Turbo shaft seal wear although there is certainly no loss of power.

   Valve stem seal wear.

 

I was also told of a issue with some type of filter that is under the Cam shaft ( rocker) cover that effects air usage and can cause oil consumption. dont know anyting about this !!!

 

Has anyone any ideas or come accross this issue. I know the oil consumption with the light oils is a bit higher but not this high.  I want to get the 1 million Km out of it before I have to change the engine for the second million 

 

many thanks

Anthony

[littleade]

Would a switch to a 5w40 like this be worth a try if it's suitable for your engine/on a fixed service interval as you don't need low ash oils as you have no DPF?

http://www.ebay.co.uk/itm/VW-Audi-Quantum-Platinum-5W40-Fully-Synthetic-Engine-Oil-5-Litres-/181376560205?pt=UK_Vehicle_Oils_Lubricants_Fluids&hash=item2a3ae2ac4d

[Phil-E]

The VW507 oil is backwards compatible with other oil so I don't think the problem lies there.

 

Phil

[skodacarman]

If it was valve stem seals, you'd be trailing plumes of smoke when you accelerate.

[FatblokeVRS]

Would a switch to a 5w40 like this be worth a try if it's suitable for your engine/on a fixed service interval as you don't need low ash oils as you have no DPF?

http://www.ebay.co.uk/itm/VW-Audi-Quantum-Platinum-5W40-Fully-Synthetic-Engine-Oil-5-Litres-/181376560205?pt=UK_Vehicle_Oils_Lubricants_Fluids&hash=item2a3ae2ac4d

Might be worth trying a 5w40 in it as it has higher mileage on the engine. Should it not be 505 spec in it? Edited 23 April, 2014 by FatblokeVRS

[littleade]

Couldn't say TBH as I'm not an expert. I use that oil in SWMBO 1.9 pd Altea so thought it might be worth a punt if its compatible. Good luck.

[wiilydog]

As above try 5w40 oil as it will be thicker when hot as long as it is 505.01 it will be fine for pd engine.

[classic]

1 litre/8000km - I would say is acceptable at 450k kms . You need to do a compression test and cylinder leak down test to check the state of the engine. Proper testing can determine if there is problem with rings, head, valves etc. I would suspect turbo to wear out before the engine does, but without proper testing your just guessing...

Edited 24 April, 2014 by classic

[Phil-E]

Also something obvious to check but have you looked for any oil leaks?

 

If it's not really smoking but you're going through a lot of oil then it may be leaking out somewhere.

 

Phil

[Stormchaser]

When I had my 1.9bxe engine the dealer always put in 5w40 oil from its first service.

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