I know it's been done to death, but I've done a search and nothing is answering my questions specifically. I have everything sorted and waiting for a good full service. But the one thing I lack is oil. Currently it's using 10w40 (I didn't put it in), but I'd like to put in fully synthetic when I do a change. The car itself is a '99 A4 2.4 V6. I'd like to go for an oil that meets VW/Audi specifications. I know that the latest is 504.00 but that's 5w30... Now is this too light a weight for the amount of miles the car has done? It's currently not using any oil as far as I know. Should I go up one and buy 5w40 instead? And if so which would you recommend? Many thanks in advance!