Interesting........my 2003 Dodge Ram with a Cummins has 310k on it and it still has the original batteries......I haven't ever needed to clean the posts either. Awesome batteries!!I am pretty sure that East Penn/Deka/Power Battery has been the supplier to Volvo, Cat, Freightliner and Chrysler since the late 90's?
I have had the best luck with the East Penn batteries the past 15 years anyway.
The heat down there is what kills them. I had family that would winter in Arizona and such, and would either drive back and forth or leave a vehicle in storage down there and had nothing but grief with batteries never lasting as they would here in the Great White North.I only get like 3 years out of a battery I'm on my 3rd set in my 2010 ram they must sell the sh*t batteries down south