Search results for query: dilution

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  1. n10n

    What Have You Done To Your Van Today?

    Oh no, diluted value :eek:
  2. Pau1GTI

    Dipstick Reading High

    ...change, truth is I never checked it after the service or up until now. So it might of been overfilled since then. Or it's the dreaded oil dilution from regens. I've booked it in immediately for an oil change and new filter, and it won't be driven until then. My question is, should I sent...
  3. D

    Rough idle when cold

    ...It maybe a slightly bent connecting rod caused by hydrolocking due to a leaking EGR cooler, this is a known issue. My advice is to read the fault codes, monitor the coolant level / reservoir pressure and preferably get a Miller oil analysis to determine the state of engine wear and fuel dilution.
  4. D

    T6.1 Reduce oil level and Oil dilution

    Have a Search with ‘dilution’. Plenty of content on the Forum. If your oil level is rising without anybody adding oil there are two possibilities: 1. Coolant contamination - emulsified oil, obvious. 2. Fuel dilution - not obvious at all and with a 2% diesel contamination limit before accelerated...
  5. Greenmachine

    What Have You Bought Today?

    A partial re-gen dumps unburnt fuel into the sump, diluting the oil
  6. D

    Top end tapping noise on cold startup

    You don’t, safe to say that there will have been some dilution and as 2% is the safe limit who knows. Fuel dilution will probably kill the turbocharger and oil control rings before anything else. If the top end had excessive wear it would be noisy all the time and probably more so when the oil...
  7. D

    T6.1 oil level warning: Reduce Oil Level!

    Diesel fuel dilution criteria according to Miller: 2% by volume - caution. 4% by volume - failure. 4% of 7.4L = 296mL. Safe to say that oil is being diluted beyond recognised safe limits and causing accelerated engine wear.
  8. Stay Frosty

    Strong smell of fumes

    In all seriousness it's more like an onion bhaji smell and when you're hungry makes you want to eat the seat cushions.:geek: Regarding the diesel being dumped into the sump it's worth bearing in mind the engine oil is being diluted so not safe to simply decant the resultant syrup as eventually...
  9. Sasquatch

    Hello y’all! (My first VW drama)

    ...or 0.5% which isn't. I like the way they urge you to retest so they get another payday. The overfill light is a common issue on these units and it is almost always not related to oil dilution - mine certainly wasn't. Make yourself a cuppa and do a forum search. PS - my side windows don't...
  10. D

    Oil level too high warning… AGAIN

    The oil is being diluted by either coolant (very unlikely) or diesel (very likely). There is a good deal of information on oil dilution, it's not uncommon and nor is it just a VW issue, it's plagued a lot of JLR Euro6 diesel engines too...
  11. mmi

    DPF regen questions/concerns

    Don't know the details about A6 but e.g. T6 doesn't finish DPF regen at standstill... https://www.t6forum.com/threads/t6-1-reduce-oil-level-and-oil-dilution.48235/post-662400
  12. B

    Coolant level low. What to top it up with?

    I was thinking about gsf only 2miles away but can’t confirm what’s already in there so might just use the water
  13. mmi

    Dipstick Reading High

    It depends, some early T6.1 had late T6 engines (MY19). Which interestingly means that MY18 T6 and MY19 T6 sometimes have different engines with same power output. It's the emission control system which makes the difference. Confusing - yes, indeed The same happened with early T6 - early ones...
  14. S

    T6.1 Reduce oil level and Oil dilution

    I’ve got a December 2020 Vw t6.1 kombi. I purchased it when it was a year old so I don’t know what happened in its first year but I’ve had nothing but issues with the ‘reduce oil level, go to workshop’ warning for the past 2 years. I have been to my local Vw dealership a number of times and...
  15. B

    Coolant level low. What to top it up with?

    Just had a lot of work done and checked fluid level this morning and it’s low. Would it be ok to top up this amount with deionised water?cambelt and pump just done can’t see a leak so assuming just air. Just didn’t want to dilute it to much and of course the garage is closed today.
  16. Mocko1962

    New Pop Top Stain

    Milton cleaning fluid diluted . seems to clean anything my wife throws at it
  17. Drive Wayne

    T6.1 Reduce oil level and Oil dilution

    ...a service I remove between 400 and 500 ml of oil through the dipstick tube to reduce it down to halfway. Initially I was worried about oil dilution so I sent a sample to Miller's for oil analysis, no worries from the results. I'm lucky my van doesn't use oil, I'm sure it's just oil...
  18. D

    Coolant leak - Investigation ideas

    Miller oil analysis, about £50, will give the fuel dilution and other contaminants in the oil. Data entered in the test info’ must be accurate. Syringe and 1.5m of hose that will fit down the dipstick is needed to take the sample.
  19. J

    T6.1 Reduce oil level and Oil dilution

    ...do regeneration at standstill is getting oil diluted with fuel." I imagine that for the majority the steps that can be taken to avoid oil dilution and possible repercussions of that, are of great value. Thanks again, you have added a lot of useful references within this post which I feel...
  20. D

    Engine Oil testing - soot levels

    2% is the threshold for Caution so it’s definitely time to change.
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