Haven't used one but the magazines say they last a few more years than a regular battery. Course they get paid by Optima for advertising so . . .
Depending on the quality of battery you normally use, this one may not be much more. It is what I am going to put in mine as soon as my battery goes belly up. It has difficulty now in the cold so it's probably about time.
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1970 Blazer with a 400 sbc and 4" lift
1980 Pontiac Trans Am, 455 Oldsmobile
2012 Kawasaki Concours 14
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