Re: Please reduce engine oil - NIGHTMARE –
17-02-2018,05:22 PM
OK so on my BiTdi I can tell if it's doing a regen whilst I'm driving.
- Car starts to hold lower gears e.g. BiTdi should drop into 8th at 60mph on modest throttle, it'll stick in 7th Also apparent in lower gears if you learn what gear it SHOULD be in at what speed (e.g. 30 mph should be 5th but it will stay in 4th)
- I also notice that the exhaust is more noisy... this may just be the lower gears being used.
- And if you have the lap timer enabled via VCDS you can see oil temp, that's a real giveaway as it will be significantly higher. Normal driving at this time of year my oil temp is in the mid 80C range, when a regen is occurring it will be up into low 90s normally 92 / 93C
Not sure if they are injecting diesel into the exhaust manifold to burn off the DPF contents (it's one common approach) but my guess is that they are and the exhaust manifold is getting hot and generally heating up the engine so oil temp climbs.
I've had the car nearly 5 years so I know how it should behave.... now I can tell every time when it's doing a regen and if I arrive home whilst it's doing it I'l take it straight back out, in sports mode (higher revs, more turbo boost / fuel / heat to help regen) and drive until I see oil temp drop below 90. Then stick it in normal gearbox and see if 60mph gives me 8th. If so go home.
You also notice that fuel consumption is markedly increased during a regen. e.g. remaining range of 150 miles and you see it drop to 140 in 5 miles.
A6 allroad BiTdi (MY14, July 2013 - DAB & power tailgate). Glacier white, tech pack (HDD Nav, colour DIS, Parking Plus), sports seats, 4 zone climate, heated seats front and rear, ambient lighting, 75L fuel tank, adaptive Bi Xenon headlights