vs
Thermostat MISHIMOTO or OEM Mazda
Always buy the Mazda OEM branded thermostat from any local or online Mazda factory parts retailer, this is not the item you want to save a couple bucks on, no matter how much you trust that ‘other’ brand.
Pros: reliable, quality
Vehicle:
Mazda
I have a mishimoto thermostat with their radiator setup. It does kick on the fans on at a lower temp range than when the stock one would which is good. I had issues running hot on the stock rad/thermostat and haven't had any issues since.
Pros: fans kick on sooner, no overheating issues
Vehicle:
Honda S2000
Make sure you use a Mazda OEM thermostat. I wouldn’t trust anything but OEM for those.
Pros: reliable, trustworthy
Cons: non-OEM not trusted
Vehicle:
Mazda
I replaced the thermostat with a Mishimoto thermostat and vaccume filled the coolant. I did a 30 min test drive in the 95+ weather with the AC cranked. Never went past the 7th dot.
Pros: stable engine temperature
Vehicle:
Nissan
My 2021 Mazda3 Turbo has classic thermostat failure symptoms: \n\n- Erratic warm-up (sometimes stuck cold, sometimes near overheating). \n- Upper radiator hose stays lukewarm even after 20+ mins of driving (revved to 3K RPM to test). \n- Housing burns hot, but hose never gets scalding\u2014clear sign of a stuck thermostat.
Pros: erratic warm-up, stuck thermostat
Cons: sometimes near overheating
Vehicle:
Mazda
Part number: PX4J-15-170
They kept it for another day and were obviously able to replicate the fault and replaced the Thermostat as they thought it was sticking causing the Temps to fluctuate.
Pros: Thermostat replaced
Cons: sticking, causing fluctuation
Vehicle:
Mazda
Mileage: 89000 km
Forget about the Mishimoto thermostat. The OEM thermostat is way more reliable and does the job.
Cons: less reliable than OEM
Vehicle:
Mazda
I put the mishimoto 160* in hot water to test it out. Lo and behold, wax started seeping out.
Cons: wax seeping out, failed test
I had 2 fail back to back. The first lasted 3 months, a couple thousand miles, the 2nd lasted 5 weeks, also a couple thousand miles. Left me stranded. 275 degree spike followed by coolant puking.
Cons: failed quickly, left stranded, coolant puking
Mileage: 3218 km
Thermostat failed multiple times
Cons: failed multiple times
Vehicle:
Mazda 3
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