I know this is an older thread, but this just came up with me today. I have an Interstate MTP-24F in my 2010 4 runner. The battery is 4 and a half years old. Today I stopped by a local interstate distributor with the idea of replacing my older one.. a gentleman that worked there asked to test the battery before replacing it.. when he pulled the cables off there was quite a bit of corrosion around the positive terminal but he cleaned them off and then tested the battery with a load on it. Tested at 650 cold crannking amps, over 750 cranking amps... he put it all back together and said he felt sure I could get another year or two out of it. Tell you the truth, I was surprised, I live in Louisiana and it's HOT HOT HOT down here and I figured the long summer months had taken it's toll, but apparently not. I thought about buying a Deka but I have Interstates in my 4 runner and in my lexus.. never ever a problem. I really like the MTP's.
Roland