Diesels contaminate oil at an alarming rate, but given the 18:1 compression ratio, you can start to understand why some of the exhaust gets past the piston rings! The MKV oil cooler / filter holds a good 200mL of oil, and this isn't ever completely drained via the sump bolt. The oil filter has one way valves so it always has a "head" of oil to get to the turbo bearings quickly on startup. I drain this extra section when I do my own changes, but a dealer etc wouldn't bother. I find black as black oil each change, and I'm doing the 7500 inbetweens.
A VW specialist will save you at least $100 a service, I paid $326 for the same service at a specialist who is passionate about VAG and my business!
2014 Skoda Yeti TDI Outdoor 4x4 | Audi Q3 CFGC repower | Darkside tune and Race Cams | Darkside dump pDPF | Wagner Comp IC | Snow Water Meth | Bilstein B6 H&R springs | Rays Homura 2x7 18 x 8" 255 Potenza Sports | Golf R subframe | Superpro sways and bushings | 034 engine mounts | MK6 GTI brakes |
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