[oilman]

That's not a good situation at all, really crap service and typical cheap, basic garage oil that they probably over charge for. Actually trident isn't the worst around, but I consider it an oil for older stuff, driven by grandparents, rather than something you want to look after and have a fun drive in. If you've been thrashing/tracking the car since the service, then in 2k the oil could have lost a lot of it's properties as it's only a basic mineral oil. I would hope that it would last more than 2k though. I don't know where you would stand with trading standards, but I'm pretty sure you'd have to get the oil tested to prove that there was oil failure.