Finally reupholstered the vintage bucket seats on my speedster with leather I gleaned from an old sofa on the curb. They have a nice worn look and I want to preserve them that way as best I can.
So ... what's the best thing I can do as I prepare to set the car away for a winter here in Rochester, NY? The garage is the same year as the car ... a small, unheated frame building with a concrete floor.
Burn the garage and build a new insulated work shop garage.
If you don't have fire insurance, you could try an inflatable Carcoon. Stopped the mildew I was getting on leather seats.
Put the car up on jacks to get the tires off the ground and take out all but 10 psi of the air in them, make sure the anti-freeze is set at a low enough temp to tolerate the coldest expected winter temps, grease and change oil prior to storage, I use mink oil to preserve my leather seats and keep them supple after cleaning, drain the carb, load the car up with dryer sheets to keep critters out, and cover with a breathable cover. Make sure the garage is adequately vented to prevent moisture build-up.
As for draining the gas tank: some guys drain it dry, I leave mine full of fresh premium fuel and stabilize it well. I guess that's a matter of choice.
Maybe one of the conservators at the George Eastman House would have an idea about the leather.