
Originally Posted by
Benzmizer
Likely a (starting to be) faulty battery. Vehicles not used for quite a long time than usual and the battery connections were not removed would tend to take it's toll on a weakening battery. If the battery is proven to be new, you would not see the effect even if not used for weeks --- But if the battery proven new (less than 6 mos since purchase) you may have a bad case of a grounded wire somewhere.
I suggest you go to a reputable battery shop and have your battery's condition checked.
A 70/30 water to coolant mix may improve cooling efficiency but that's at the cost of less...
Coolant...