Engine oils - 200 Avant

[mark schofield]

In the past I've always run VAG engines on Mobil 1 SAE 15W/50. I usually
purchase mail-order in bulk as it gives a good discount but this time I
goofed and ordered Mobil 1 SAE 0W/40. The pack says it exceeds the VW
specification 500 00 & 505 00 as recommended by the Audi Owner's manual so
in theory it should be OK. Time was short so in went the stuff I had to hand
i.e. Mobil 1 SAE 0W/40.
Should I have sent it back and got the heavier weight oil or will I be OK?
Engine's a KG series turbo, about 160k miles.
Can anyone tell me what SAE rating/requirement the VW specification
corresponds to?

Thanks

Mark Schofield

Email: mschofield at cwcom.net