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There are (used to be) two thermostats at the dealer. I think they are down to only one now, the hotter one. It is only a few degrees warmer than the colder ones and will not make a difference in engine operation. These red blocks are great!
The large radiator hose that goes from the top of the radiator to the front top of the engine? On the engine side is where the thermostat is. You will need to bleed out about 1 quart of coolant before disconnecting the engine side of the hose(2 10mm bolts), otherwise you will get antifreeze all over the front of the motor, frame, and garage floor! When tightening it back up, torque it to about 15-20 lbs, not terribly tight or you will strip the threads in the block.
Easy to do,
Klaus
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98 V70Rawd(108Kmi), 95 854T(88K mi), 75 164E(173K mi)
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