May be easier in the end to get a sump from a scrappie (check the drain plug first ;D ) and fit it with a new gasket. You should have drained the oil before flushing. If you have done so you're probably to blame for the stuck plug. If not the gorilla that last changed the oil is to blame. It's no help but I once had a car services at a national (no ref to the National chain I emphasise chain) and *everything* was seriously overtightened as I found out when I did the next (out of warranty) service myself. The strap wrench I tried to undo the oil filter with needed an extension on the 1/2 in sq drive handle to undo it

Edited by Cymrogwyllt on 09/01/2011 at 19:06

cheers for advice will get it up on ramps tomorrow morn an give the chisel a go failing that weld a slightly bigger nut on an try that failing that will have to go a garage... also this van was last serviced by k**k fit feb2010 so i kinda hold them responsible for over tightening it never going to k**k fit again..

cheers for all advice i successfully managed to get the bolt out today by weldings a m12 nut onto what was leftof the old and it undid thanks again honest john works....