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Old 07-29-2013, 08:44 PM
v8volvo v8volvo is offline
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Join Date: Jun 2009
Location: Montana, USA
Vehicle: '86 745, '83 764
Posts: 1,627
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Good to know! Nice catch on the T-stat as well. I think crappy/malfunctioning t-stats are frequent culprits in the death of these motors... the design of the cooling system leaves them with a lot of work to do and if they're not working quite right, things can get out of control quickly. I've had new thermostats be bad right out of the box, too. Wahler is the only brand to use there -- same as OEM. Expensive compared with a Chinese Meyle, but the extra $15 is cheap compared to the consequences of a thermostat malfunction...

Did that new rad have the number 65509A on it anywhere?
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