Smasal
Full Access Member
My ever starts make it around 3 years.
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I used to use only Optima red tops although the last few I've had weren't very good. The first one was still kicking 7 years after I purchased it. The next couple only gave me a little more than the 3 year warranty before needing to be replaced.
Sears Diehard is the only one i will ever use. All my trucks and cars get them. They are great and the warranty is great. What a difference it makes when you use a good battery.