Your main problem is going to be from the piston rings down. Rings may stick and the other "internals" may start rusting. I would start out doing what we do for boat winterization. Change oil and filter, run if for a while, then fog the be-jesus out of it. If not fogging spray is around, use MMO down the intakes. Then go beyond that. Fill the rest of the block up with a low sulfur diesel fuel, up to the valves. Make sure the pistons are soaking in it by popping off the spark plug and seeing any is running out. You could also take a breaker bar and socket, make sure ignition is off, and manually turn the engine over so that the pistons have been bathed in this stuff. Take off the valve cover gaskets and put a good coat of grease on the valves, springs, rocker arms, basically the whole top of the head that is not soaking in diesel fuel with something really thick that won't runoff. Put in fresh antifreeze. I'd take out the AC fluid but remember you'll probably have to put in new seals when you fire it up. You'll have to anyway for the prolong sit so might as well reclaim the freon and use it later. As long as this stuff stays dry, you can re-use it later. I'd then fill the transmission all the way up to the top of the dipstick and just make a note and put it in the car that you'll have to drain it off first before firing, and so for the crankcase as well. Take battery out. Jack car up and not let it sit on the tires. I'd spray the exhaust system with a good coat of oil, including the headers. Leave the climate controls on "panel", that will allow the car to breath. Cover it with a good cover, regardless if it's outside or not. Then like I said, write this all down and tape on the steering wheel so you don't forget how to de-winterize it.
[ June 10, 2004, 03:07 PM: Message edited by: Schmoe ]