Jonathon writes: Sajeev, I grew up and still live in Chicago. Following the habits of my parents, I always replace a battery after four Chicago winters. Can modern batteries withstand the cold climates better than their predecessors, or should I replace that 4 year old battery this fall? Sajeev answers: I do not know if car batteries evolved
The rest is here:
Piston Slap: Change Batteries Like Oil. Or Not.