Well, in the interests of easy service of the vehicle I decided to replace the standard BMC oil filter unit (a bizarre contraption which is diabolical to service) with a Moss spin on filter adaptor. The scene below shows the filthy device removed from the vehicle. It spews oil all over the place when you try and remove it from the car - I dont know if there are any easy ways to do it or not - I am sure there are, but I did not know them! I ended up with oil all over the place.Note: Don't do what I did above and have all your oil go into a flimsy aluminium tray that crumples when you try and transfer it into a container for recycling (a very bad idea as my garage floor found out a few moments after this photo was taken). Go straight to a container.
The Moss unit comes with really excellent instructions, I found that because of the cramped chassis arrangement installation was a little different .
This shot is from underneath the car looking up at the old filter spot - make sure you remove the compacted rubber seal. I used a jewellers screwdriver to prise it out from underneath.
Smear some grease on the new seal that comes with the Moss kit, that will hold it in place while you fit the filter adaptor.To deal with the tricky part of fitting the adaptor to the copper pipe, loosen all the fittings at both ends of the copper pipe and the adaptor bolt - this gave me more slack to get some thread into the adaptor without risking cross threading. I then tightened them all up gradually. This saved me getting one of those flexible lines which look a bit too modern for my taste. Here is the old unit below - going cheap!