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Doesn't really matter as long as you are not exceeding the degradation point of your selected oil when considering EOT. If I am remembering correctly, that is ~250° for conventional and ~450° for synthetic. I could be wrong though as it has been a while since I looked up the specifications.
I run a 203° and have for 8 years towing heavy in strenuous situations and all has been well.
I put an oreilly motorad brand 192 stat in.
it wouldn’t seal with the new housing and gasket so I put a bit of rtv around it.
i can already notice a huge difference. My heater blows out warm air and the truck has way more horse and torque readily available..
But if you guys think I should go get a motor craft oem 203 stat I will but I love it already.
The truck has been running for 5 years on an open thermostat...
Last edited by Strokiner2001; Dec 29, 2021 at 12:41 AM.
I put an oreilly motorad brand 192 stat in.
it wouldn’t seal with the new housing and gasket so I put a bit of rtv around it.
i can already notice a huge difference. My heater blows out warm air and the truck has way more horse and torque readily available..
But if you guys think I should go get a motor craft oem 203 stat I will but I love it already.
The truck has been running for 5 years on an open thermostat...
The main advantage of the Motorcraft version is that it has a much better built in sealing gasket that doesn't leak at all, and the billet aluminum housings are a must have also to keep the rust and crud away. As far as the temperate ratings I didn't much difference between stock and the 203. Far more important is that it's a quality part that works correctly so OEM is the best bet here.
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