I agree with IJ, either a chock full fuel tank, or empty with the cap off (removes the condensation threat because air inside and outside of tank is same temp).
You can buy "fogging" oil in a spray can, used a lot in the marine industry to store engines. Just squirt some down each spark plug hole and rotate engine by hand.
Either way, I'd just dump the fuel after it sat for a year. I don't see any problems putting the car on jackstands it will keep the tyres nice and round.