oil warning

Merc sprinter 313 2004 model This is what happens..... Start the engine, oil warning light goes out. Drive for aprrox 6 mins ( roughly 2,500 rpm )( 40 - 50 mph ) oil warning light comes on. Carry on driving and in 2 minutes it will go out. Then no matter how long the journey is, it will...

Hi all, double post from the other popular site but I'm desperate for opinions! 2 days ago I put my beloved W203 C220 CDI into kwik-fit for an oil change. The car isn't due a service for a good while but I thought I would, as a good will gesture for being good over the winter, give the car...