Do I have to remove the engine on my VW bus to replace the oil cooler seal?

I have a '74 westy that has a modest leak coming from inside the fan shroud on the left side of the engine - the heaviest leakage is coming from near the oil filter. Anyhow, I was really hoping that there was a fairly easy way to replace the oil cooler seal without having to pull the engine, since VW made it way harder to pull the engine in '68 with the deletion of the removable rear apron. Anyone done this before?|||i guess you could replace the seal with the motor in the bus. but i would take the motor out. if it's in the bus and you get started on it and after banging your knuckles a few times you'll wish you pulled the motor. there is actually 4 bolts that hold the motor in. plus if you pull the motor you can check other things while you have it out. like the clutch, rear main engine seal, spark plugs, trans seal and you can clean and detail the motor while it's out. it would be a good learing experience and you can brag about it to your friends that you did it. good luck.|||no, you can hire somebody to do so...|||Yes three bolts hold the engine to the chassis. you need a lift to hold the engine and the work is easy. May as well replace as many gaskets as you can while out.|||hire some one