Well if you're not going to be driving it. First up some kind of fuel stabilizer in the tank, disconnect the battery. Make sure the fluids are topped off (same when you go to start).... Also a complete wash/wax to get any kind of dirt off it. I would also recommend a car cover while it's stored in the garage too.
I usually go on the road for work for 6+ weeks at a time and this is what I always do and when I get home, check my oil and coolant and car fires right up no issues.
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