I got 170k miles in 15 years out of the factory unit in my 01 Yukon. It still worked when it got replaced, but the water pump died and I replaced it when I did that.
Pros: long lifespan, still worked
Mileage: 273588 km
Owner reviews for thermostat
Manufacturers
Comparisons
I replaced the original thermostat in my Volvo (2006) last summer at 186k miles
Pros: long lifespan
Vehicle:
Volvo
Mileage: 299339 km
With the Febi thermostat in, temps are now usually about 180F, though jumping up to 190F at times (versus 190F-200F), and the max it occasionally will go is about 200F (rather than 203F). It's worth noting the Febi is stamped at 79C (although somehow still 180F) versus the 180F/82C that the Tridon/Motorad Thermostat is, and I've also drilled a 2mm bleed hole in the Febi which may have made it run ever so slightly cooler again.
Pros: runs cooler, stable temperatures
Vehicle:
BMW
Replacing the Thermostat with a OEM part has solved the issue (with coolant flush) from a dealership.
Pros: solved issue
Vehicle:
Nissan
Got the Wahler on my 2008/2011 and it was identical to the MB part except the area that had the MB logo on the original one was ground out.
Pros: identical to OEM part
Make sure you use the motorcraft thermostat.
Pros: highly recommended
I remembered the old thermostat looking like it did, so I waited a few hours to let the engine cool down then swapped the new thermostat for the old one, turned the engine on and no overheating. I've been driving the car as it is for a while now without any problems other than I can't drive long-distance without it running too hot (ex. I drove 4 hours a couple times a year traveling for college, and in the summer the car sometimes would overheat by the time I got to my destination).
Pros: prevents immediate overheating
Cons: overheats on long distances
Vehicle:
Subaru Legacy
After getting mine back together, and filling it back up with coolant, i found the new thermostat from the dealership was stuck wide open and the car wouldn’t get over 110*F.
Cons: stuck wide open, car wouldn't heat
Vehicle:
Volkswagen Passat
I have a 2015 sedan and I’ve got 192,000 km and owned it since brand new and I’ve had that happen and changed the thermostat twice, just make sure you get OEM Honda thermostat and coolant as it takes a certain type. Make sure you
Burp the cooling system of all air and make sure you add enough coolant to the radiator and overflow, it’s fairly common for the thermostats to fail
Pros: OEM recommended
Cons: original failed twice, common failure
Mileage: 192000 km
Had a Motorad Fail Safe a few years ago and it was a POS.
Cons: poor quality, unreliable
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