Hi guys, sorry to bump the thread. Dealer is telling me that I should replace the battery as their tests show that it doesn't have the same cold cranking capability as before. Car is a 2009 Mazda 3 GS automatic (2.0 engine). Is this 24F Kirkland ok to put into my car? I only ask because I was at my Costco the other day and their book recommends some other number (8) based on my car's specs.

Thanks.