Originally Posted by doughboy
But the OPs issue is he doesn't have a dipstick (like most e9x models)
Does your 330d have a dipper?
Oh bugger, so it doesn't........so yes oil filter cap off is the best route.
Yep, 330d has a dipper!
Bugger me the money you're spending on analysis is going a long way towards the cost of an oil change!!