...volume.
This is not uncommon and it's not restricted to VW engines.
Have a read of some of these threads for a better understanding of oil dilution;
https://www.t6forum.com/search/2778894/?q=oil+dilution&o=relevance
Oil on and around the oil filter housing wouldn't worry me too much, it's...
Can do! The young lad is concerned that the black background would “dilute” the impact of the blue. He’s configuring it on his computer now and I’ll let you know
Kind of what I’m doing currently to be honest. Pre-empting at the moment as my regen frequency is the biggest red flag indicating it’s getting blocked.
But such frequent regens also bring their own problems right? Like a rather unreasonable MPG and oil dilution?
...OK. If the oil is black / brown (no water emulsification) and the oil level is rising without anybody adding oil it is due to fuel dilution.
Fuel dilution at just 2% will damage an engine / turbochargers.
Have a search, the info’ is posted. If you suspect fuel dilution you have three choices...
Mine (poverty plus business pack) has been fine since draining out about 600ml. No evidence of dilution or contamination, thenoil smells ok and it isnt rising, it just didn't tolerate the standard issue slight overfill that seems common practice among garages these days.
...sense now.
Would you say I'm best to just do an oil/filter change to be safe, note the new oil level and monitor it. No need for oil tests etc if dilution issues isn't a big thing with the t6 engine. Most likely just been filled slightly too much during the last service perhaps.
Thanks
Paul
From reading this, I would certainly want to change the oil if it has been diluted by fuel. To not do so risks excessive engine wear by the sounds of it. So why are dealers just siphoning off the excess?
@Ian Watt, what did VW assist say?
It doesn't occur. Excessive dilution is all but unheard of on these.
The warning messages are simply a case of garages brimming the oil to the top mark on the dipstick or even beyond. Sooner or later this upsets the sensor.
Once the oil level is reduced to around the halfway mark the warning...
Genuine diesel dilution is unusual on these. Not unheard of, but the case for the prosecution is rarely proven.
Occam's Razor suggests the garage simply rammed up full up to the line.
They're happiest with the level about halfway between the lines, so you'll need to pump out c.500ml, perhaps a...
Sounds like excess fuel, if it’s on start up most likely a leaking injector.
The excess fuel will be washing the bore, diluting the oil, clogging the EGR / induction and damaging the DPF. Don’t run it in this condition.
A garage should be able to diagnose this.
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