Polo GTI High Oil Usage - Discussion Thread

[Lucas_R]

.When my new intercooler is finished I will be interested to see the amount of blow by that has reached the factory cooler, I will b installing a catch can or getting the VW fix prior to the install. No point in a nice new cooler getting filled with blowby.

Just last week i swapped my stock intercooler for an aftermaket unit on my Golf. The car has done 10,000km and has had a good quality 42DD baffled catch can on for the last 4,000km. Oil changed 3x times with 504/507 stuff. Subaru upper engine cleaner done at 8,000km (just before its most recent oil change).

The intercooler (and pipes) had a nice later of oil in them - visibly pooling in some spots.

I degreased and hosed out my stock cooler before packing it away in storage. Also cleaned and degreased all the pipework i could get too.

I was amazed at how much oil was present.

[kawabanga]

This mean for sure lower efficiency of the Intercooler...
I need to install as soon as possible the catcher.

My intention is to bring the outlet pipe from the catcher to a lower part of the car and let the blow-by go away. I don't want to introduce again this hot air into the intake: there are contraindications doing this...?

.

[gavs]

It's illegal as it will bypass one of the Euro IV emissions controls for a start. Don't know why you're worried about hot air, the intake air has to go through the turbo yet and will get super heated in there!

[kawabanga]

I know about emission, but I don't think that from that little pipe could pass more pollutions that from a lot of diesel trucks that travel our roads

Considering the high temps in the engine bay I also thought to insulate the filter box and air intakes (but I haven't found a good solution yet, considering heat inertia)...

I know that the turbo will super heat the air, but also few degrees make the differences: we are now in summer and believe me that there is a significant difference of performance compared to our winter (now about 30°C, during winter below 0°C): I know that this depend also on the efficency of the Intecooler, that considering the different temperatures (air-air) is able to better heat exchange, but...


BTW, here in Europe the GTI is Euro V

[Boeta]

Well having been immune to oil consumption issues up to this point, my GTI showed a yellow oil level light for the first time a couple of days back at 6650kms. Took the vehicle to DVG in Myaree and they explained that VW had put out a fix 2 weeks ago for the oil consumption problem in the Polo GTI, which was to change out the crankcase oil breather, which they did. To their credit, the rattle in the behind the dash is now gone too.

Knowing very little about this specific part... I did some research. So my question is, and forgive me if this is naive, how does the fix to the oil breather actually prevent the oil burn? My understanding was the oil burn was cause by the 'blow-by'... so now I'm really confused.

[gavs]

Ok, the theory that be have is that based on evidence of vehicles that have oil consumption issues showing no sign of piston-ring blow by on the pistons, they had to look elsewhere. What they seem to have found is that the inbuilt oil separator (aka factory catch-can) doesn't function up to scratch, they way it is supposed to. This is shown by cars having masses of oil showing up in the intake pipe work post breather inlets.
The oil separator is meant to work in a labyrinth in that the air has such a difficult path to follow, the oil vapours cannot follow the air out into the breather system and the oil is meant to catch on the walls of the labyrinth and drip back down to the sump. Problem is, this isn't working so the oil vapour is still exiting the crank case in the breather system, condensing as it hits the cooler intake air and getting drawn through the intake system. It's then getting burned on the intake side of the engine as vapour and collecting in the intake system.

I will be interested to see the amount of oil that has collected in my intake system when I replace the intercooler.

[ill0gitech]

What they seem to have found is that the inbuilt oil separator (aka factory catch-can) doesn't function up to scratch, they way it is supposed to.

Would this mean people who haven't noticed the issue should look at getting the oil breather replaced with the new model to avoid potential build-up in the intake pipe?

[gavs]

No harm in doing that, if the dealership is willing to do it as it's a known problem then i'd say go for it. I wouldn't fork out the cash to get it done though....

[Lock & Load]

Could a aftermarket oil catch can be fitted by passing the current one on the car , solving the high oil issue ?

[gavs]

Yes, that's another solution but if you use a catch can you really should get one like the provent 200 that drains the filtered oil vapour back into the engine.

[dav]

The little guy has started drinking again

Getting one of them new separators shipped in from Germany, hopefully it gets here in a month.

[kawabanga]

My GTI doesn't drink so much oil (1liter in 10.000Km), but I've ordered anyway the modified VW pipe (63,00€).
Beside I also bought this oil and see if it makes any difference compared to Castrol Edge: I will change oil and oil filter, drive for at least 1000Km and see for possibile differences, then I'll install the new pipe...

[kevinctr]

My GTI doesn't drink so much oil (1liter in 10.000Km), but I've ordered anyway the modified VW pipe (63,00€).
Beside I also bought this oil and see if it makes any difference compared to Castrol Edge: I will change oil and oil filter, drive for at least 1000Km and see for possibile differences, then I'll install the new pipe...

Can share the OEM part number? My Polo GTI does not drink oil but should be a good item to have or upgrade.

[kawabanga]

Should be this one, but is to be verified: A007 V 03C 103 474 AD

[alexz]

Does anyone know if the my13s are coming with this already? Can you visually see a Difference?