Ah.. that explains all. I'd love to have an exploding diagram to hand. Does this mean that once the oil filter is off, the oil cooler will simply slide forwards off the bolt, or is it somehow threaded too?
If I need to get the remains of the filter base off, I think my only hope is grinding (I've exhausted all the brute force methods I know, and trust me when I say that this is unreasonably tight)
If its been x'd I'll probably have to somehow get the threaded bolt out too
