Bill Payer
Believe it. There's an ECU-connected "oil quality sensor" on the sump precisely for that reason. It's all to do with the variable service interval computations. [Can have to last 20,000 miles or more.]
VW licence oil manufacturers to produce the tracer-containing VW506.00/01 0W/30 fully synth oil - at a cost. Why do you think it's £80 a fill?
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VW licence oil manufacturers to produce the tracer-containing VW506.00/01 0W/30 fully synth oil - at a cost. Why do you think it's £80 a fill?
I don't know why it is £80. I can buy SLX11 for £36, and I reacon the factors are making a profit on it.
Garages charge too much, I don't know how they get away with it.
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Bill Payer Believe it. There's an ECU-connected "oil quality sensor" on the sump precisely for that reason. It's all to do with the variable service interval computations. [Can have to last 20,000 miles or more.]
The oil quality sensor is an infrared light (so not a chemical detector) that shines through the oil to assess how much it's deteriorated. There's some doubt the that the cars electronics uses this at all, actually calculating the service interval from either the number of cold starts or its MPG.
VW licence oil manufacturers to produce the tracer-containing VW506.00/01 0W/30 fully synth oil - at a cost. Why do you think it's £80 a fill?
Fully synth oil is £10-12 per litre in many main dealer service departments.
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Bill Payer
I've never taken an oil quality sensor apart; but that doesn't fit with what my oil supplier's tech division tell me.
Their sales staff say that they have to licence the tracer chemical from VAG which is why the special 0W/30 oil for VAG is so dear [to me] and also why they have to produce different 0W/30 tracer oils for MB, Ford and now GM.
I now have to stock [among 39 of their other engine oil lines] five slow-selling 0W/30 fully synths; if there was no good reason, why would they do it.
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Bill Payer I've never taken an oil quality sensor apart; but that doesn't fit with what my oil supplier's tech division tell me.
I don't doubt that there's a reason for this (although some oils carry several approvals, do they have several tracer chemicals in them?). What I do doubt is the engines ability to know which oil it's been filled with. As I said earlier though, it would be very easy to test the oil in the event of a major warranty claim.
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