WD40 won't last that long. ATF is a cleanser and very good at freeing stuck rings. I personally use a little oil. Put a couple of capfulls down the spark plug holes and just rotate the motor over a couple times to get a nice coat on the cylinder walls to prevent rust. If the motor is being stored in a humiid environment like a shed or garage it would be a good idea to get some oil on the valve springs from time to time.
Ok that sounds good. Should i do a fresh oil change before i store it?
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1996 civic dx hatchback - Honda tuning feature December 2012 "The black cloud"
1998 crv daily beater