You must have had a bad battery. My yellow top sat for 6 weeks total. And cranked like the first day I bought it.
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i put a red top on everything i own.. i dont like ac delco batteries.. we sell exide and interstate where i work, and have replace LOTS of factory gm batteries that were less than 2 years old, already crapped out.. i will never buy one for the life of me, but i did have a neverstart battery that lasted almost 10 years.. my second choice is exide battery..