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Review on πŸ”§ Improved Motorcraft RT1139 Thermostat for Enhanced Engine Performance by Srinivas Johnson

Revainrating 5 out of 5

This is a 192*F thermostat. It is real.

This is a 192F thermostat. It's a real Motorcraft and that's all I want to use for it. I went back and bought an extra one to have on hand. I boiled it in water to compare to my old thermostat and it opens a lot more so it's no wonder why my engine was running hot.

Pros
  • speakerphone
Cons
  • The list will be long.