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lower thermostat

  1. Lower Thermostat in E46 Expansion Tank

    DIY: Do It Yourself
    I changed all the belts on my wife's '01 325xi last weekend. I had to remove the upper radiator hose to get at the serp belt and put everything back together topping off the expansion tank with fresh BMW coolant. I took a look at the car the next day and saw coolant all over the ground. I...