@ Qsilver7 I thought my battery was old in my x5 but turned out it was only about 3 years old too. so I`m trying the eliminator battery from canadian tire. see how long this one lasts. when it did get to -40c it turned the x5 over with ease, just like starting it in the summer ,couldn`t tell the the difference.

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2003 bmw x5 3.0i ,219000km build date 2003-08-18