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BTW, if you do use fogging oil, don't spray it directly into the intake! You would need to either spray it into the breather tube that is half way between the air filter box and throttle body, or remove the spark plugs and spray it directly into the cylinders.
How long do you think cars (ugly ones) sit at a dealership.
a very loooooooong time.
and the dealer throws a battery pack charge on them to start when they want to start 'em.
Dealer vehicles sit for a month or two then wholesaled if not sold.
That's really not a good idea.It's not only about the battery.
You're creating moisture in the oil.The engine will not burn off moisture in 10-15 minutes,especially idling.
If a car will sit for a few months you should change the oil and filter,fill the tank and use a fuel stabilizer and Battery Tender.