Polo GTI High Oil Usage - Discussion Thread

[slark]

Hi Dude

I have the same issue, even worse. My 2012 Polo GTI bought from private seller on Feb this year. using excessive amounts of oil. Badly, this vehicle is out of warranty. I did a oil consumption test in the Denlo VW Parramatta, they told me the result shows positive which cant convince me. Do you want to go with me to find some better solution. Anyway, someone knows will VW fix it even the car is out of warranty. Much appreciated. Lee

[ScotRok]

Picked the wife's car up from the service centre today, we are now doing the consumption test, even though I told them the car is putting out blue exhaust under hard acceleration and when doing low speed manoeuvring. VW procedure apparently. Ignore the blue gases and concentrate on the oil usage.
i followed the car home and watched it smoke everytime it slowed at lights or junctions, even after it had had time to warm up.
Its a 2013 model with the modified cth engine.

[alloyvee]

I have a late 2012 Fabia vrs wagon with CTHE engine. Due to excessive oil consumption of around 700ml per 1000km, It had the smaller oil jets and software updates done. With new oil it would use around 100ml per 1000km which increased some with the oil getting older. I recently checked the oil level and it needed about 700ml to bring it up to its normal level. It had suddenly just chewed it up. Ihad been running around some hilly areas in auto mode with a bit of a load on. I figured that with the extra load, in auto running too high a gear at low revs is what caused this. So after topping up and writing down the mileage, I drove the car in manual mode all the time, using more revs and giving it a good old squirt pretty much every time I drove it. It uses no more fuel than before, is much more fun and it has used NO OIL in 1500kms.

[DETROITCANDY]

+1 for driving in manual to reduce oil consumption and no extra fuel consumption. Trick is to NOT let it lug around under 2K RPM, especially if you decide to give it sudden heavy load (eg. don't mash the pedal @ 1600rpm in 7th at 80km/h in either manual or auto). Drop back a gear or two before giving it aggressive accelerator input. If I let my wife drive around in auto for a few long drives I could guarantee black soot or the rear hatch and oil level dropping down the dipstick. It would go between 4-5K between top ups when I drove in manual. An independent VW technician once suggested to me that these engines run notoriously lean (hot) under these low RPM/high load situations and that once they are tuned and dump a bit more fuel in (keeps the charge cooler/richer), that the oil consumption also goes away. This may explain detonation and combustion charge blowing past the rings, possibly creating positive crank pressure that in turn blows oil though the PCV into the intake that in turn reduces the knock resistance further perpetuating the knock? (Not sure if that's an accurate explanation of what is actually possible).
Also DSG tune that keeps the revs up a bit more may also help the cause and turn 'S' for 'Stupid' into 'S' for 'Sport'.

[Lucas_R]

^ this is exactly why the DSG version of the twin charge engine generally have more issues (or run into issues earlier) than manual versions - the DSG is always in too high of a gear which causes the engine to labour at low revs and this is where it runs really lean and hot (and therefore detonates/pings) which over time burns holes in pistons.

Cars driven with more aggression and/or manual cars tend to be much better off.

[SilvrFoxX]

I am looking at the 2106 GTI, is there any examples of excessive oil consumption with this model?

[ScotRok]

2016 is an 1.8 engine, and different.
I've noticed that the oil smells very strongly of petrol when I pull the dipstick to check the level.

[edmondvincent]

^ this is exactly why the DSG version of the twin charge engine generally have more issues (or run into issues earlier) than manual versions - the DSG is always in too high of a gear which causes the engine to labour at low revs and this is where it runs really lean and hot (and therefore detonates/pings) which over time burns holes in pistons.

Cars driven with more aggression and/or manual cars tend to be much better off.

@Lucas_R so would you recommend driving the car a little harder than normal say for example at takeoff? Because I find myself driving the car like a granny most times!


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[Xeon5]

An independent VW technician once suggested to me that these engines run notoriously lean (hot) under these low RPM/high load situations and that once they are tuned and dump a bit more fuel in (keeps the charge cooler/richer), that the oil consumption also goes away.

Has there been a case where this is proven? I wouldn't mind getting my GTI remapped if it would help, mainly to help with the fuel mixture.

I have had the oil jets and breather pipes installed and it isn't using that much oil like it did before but still around 1200 miles it started to move. That was since January when I had my service and in July I had an iterim oil change with Shell Ultra Helix 5w40 which so far hasn't moved on the dipstick.

[Lucas_R]

@Lucas_R so would you recommend driving the car a little harder than normal say for example at takeoff? Because I find myself driving the car like a granny most times!

Definitely. Put the DSG into manual mode so that you have control of the gears and let it rev more (higher).

Has there been a case where this is proven? I wouldn't mind getting my GTI remapped if it would help, mainly to help with the fuel mixture.

I have had the oil jets and breather pipes installed and it isn't using that much oil like it did before but still around 1200 miles it started to move. That was since January when I had my service and in July I had an iterim oil change with Shell Ultra Helix 5w40 which so far hasn't moved on the dipstick.

Proven many times around the world with this twincharge engine - ill try to find one specific local example by a well regarded VW custom tuner in Sydney who couldn't believe his eyes when he saw how poor the standard tune was on these cars. It was running so lean (not enough fuel which equals excessive heat and high chance of detonation/pinging).

Getting it remapped will do wonders for the longevity of the engine....and be much more fun to drive.