Hello T6 owners. I have a 2019 T6 Cali Ocean & am about to do an oil & filter change. I wanted to flush the engine with new oil before replacing the oil because I find the effects of the EGR system a bit scary & wish to negate these effects as much as possible. Does anyone know for sure the minimum amount of oil the T6 Diesel CXFA engine will safely run on? Just Kampers has a video on Youtube doing an oil+filter change & does not one - but two flushes before replacing the oil. He says he uses just over 3 litres for the flush but the oil capacity of my engine is 7.2 litres. As you can imagine, Im'e a bit reluctant to start & run my engine with less than 4 or 5 litres of oil in it. I could ring my local VW dealer but they would probably want to charge me £100 just for the info. Does anyone on this forum know? IS IT SAFE.....?
Engine oil change & flush
- Thread starter aligolds
- Start date
An oil flush wont make any difference whatsoever to the EGR, which does not run in oil or have oil running through it.
The flush additives unleash unpleasant and aggressive chemicals into your engine, so best avoided unless really necessary.
Unless things are bad in there, either through contamination or an excessive distance since the last service (we're talking 2 or 3 times the service interval, not merely 2000 miles over) it will bring no benefit.
I wouldn't run the engine on anything lower than the minimum mark on the dipstick. Engines are pricy old things if you break it.
Its your van, but I wouldn't waste my money.
The flush additives unleash unpleasant and aggressive chemicals into your engine, so best avoided unless really necessary.
Unless things are bad in there, either through contamination or an excessive distance since the last service (we're talking 2 or 3 times the service interval, not merely 2000 miles over) it will bring no benefit.
I wouldn't run the engine on anything lower than the minimum mark on the dipstick. Engines are pricy old things if you break it.
Its your van, but I wouldn't waste my money.
I have no intension of putting flushing additives in my engine for the reasons you state & I know the EGR system wont necessarily be improved by better oil. But the EGR system does put loads of soot in the oil which does have nasty side effects such as extra wear on bearings, bores, valves & piston rings. Also, this extra wear in the bores & rings can cause more oil to be burned in the combustion which in turn produces more soot which causes more clogging of the ERG valve & cooler, inlet manifold etc.
So if I am changing the oil myself, the added expense of oil & filter + flushing oil is a small price to pay for a cleaner engine & the probable extra longevity. Having said that, I wont run the engine with less than the stated oil capacity unless I am sure it is safe to do so.
Is it not a shame that these beautiful engines have to be contaminated so badly with this dreadful EGR system & the associated soot? Iv'e been wondering why VW don't take the portion of exhaust gas from the exhaust system after the DPF. It would put the vehicle cost up but would save the owners a lot of money & agro during the vehicle's lifetime. I believe (according to Wikipedia) the Transporter was not affected by dieselgate, but I wonder wether the offending software switched the EGR valve off on those vehicles affected whilst travelling on the road because their engines were becoming knackered within low mileage.
So if I am changing the oil myself, the added expense of oil & filter + flushing oil is a small price to pay for a cleaner engine & the probable extra longevity. Having said that, I wont run the engine with less than the stated oil capacity unless I am sure it is safe to do so.
Is it not a shame that these beautiful engines have to be contaminated so badly with this dreadful EGR system & the associated soot? Iv'e been wondering why VW don't take the portion of exhaust gas from the exhaust system after the DPF. It would put the vehicle cost up but would save the owners a lot of money & agro during the vehicle's lifetime. I believe (according to Wikipedia) the Transporter was not affected by dieselgate, but I wonder wether the offending software switched the EGR valve off on those vehicles affected whilst travelling on the road because their engines were becoming knackered within low mileage.
Ah, apologies. I read that as the other way around.
Nevertheless, the advice remains valid. If your vehicle is serviced on time with the correct oil, and the oil has not been contaminated via HGF, etc, then there is no benefit to "flushing." If you've m,issed the last few services, etc, then go for it, otherwise you're simply wasting your money.
For all sorts of technical reasons down to the gases behaviour at a molecular level that I won't bore you with, the re-admitted exhausts gases need to be fairly hot, within a certain range. Intercepting the exhaust stream post DPF would render the device ineffective, lead to extremely quick foulfing, and require a significant amount of extra plumbing...and then we'd all be here complaining about that instead.
Nevertheless, the advice remains valid. If your vehicle is serviced on time with the correct oil, and the oil has not been contaminated via HGF, etc, then there is no benefit to "flushing." If you've m,issed the last few services, etc, then go for it, otherwise you're simply wasting your money.
For all sorts of technical reasons down to the gases behaviour at a molecular level that I won't bore you with, the re-admitted exhausts gases need to be fairly hot, within a certain range. Intercepting the exhaust stream post DPF would render the device ineffective, lead to extremely quick foulfing, and require a significant amount of extra plumbing...and then we'd all be here complaining about that instead.
I like your thinking - you want the best for your engine. I do, however, think that it's better to simply change your oil more often instead of flushing it.
This year I did mine at about 8K since the last oil change and in my 6 year ownership it's never gone 10K miles from one change to the next.
I also question the wisdom of using flushing oil, which I presume doesn't meet VW 504 00 / 507 00 standards, even though it's not in the engine for very long.
I would only use 504/507 which I can buy in 20L drums for £3.50 L. But I shall bow to the popular opinion on this forum & just change it every 6 months. Thanks for the advice.
Don’t worry about the flush that happen when diesel goes into the oil with failed regens
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