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Why does the car being permium matter?
More electronic systems means higher instantaneous current draw.
Seems like it’s perfect for me, no?
Hey, if you get a fine deal on it and it provides all the CCA you need then that’s a win in my book. You should still look into trickle charging if not driving the car for more than a week. The battery can get damaged.
I concur. Get the alternator checked. The diode might be giving up the ghost and causing reverse-current, draining the battery even while off.