vs
Thermostat Wahler or MISHIMOTO
Mishimoto has a great thermostat plus it has a lifetime warranty
Pros: great thermostat, lifetime warranty
Spend slightly extra and get a quality OEM Wahler thermostat.
Pros: high quality OEM
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
I've had the thermostat on my M272 engine replaced by an indy mechanic. OEM was Wahler, looking at the original the the Wahler I got, the only difference was the spot where the MB logo was on the original, it was grounded out by some grinding disk on the replacement one.
Pros: identical to OEM part
My 2007 MKV 2.5 Jetta is still having overheat problems even after changing the tstat to a OEM (Wahler) and the waterpump to one with metal impeller, which works way better than the original.
Pros: metal impeller works better
Cons: still having overheat problems
Vehicle:
Volkswagen Jetta
The Wahler one's are rubbish. Did the same after my fucking brand new Wahner DID NOT work....
Cons: rubbish quality, did not work
Vehicle:
BMW
I've replaced my thermostat with a new wahler one and I have the same problem which is that it openes at around 70°C and cools my engine to almost 50°C, from what I understand the thermostat is mechanical and electronically assisted to open faster/wider
Cons: opens too early, cools too much
Vehicle:
BMW
I just replaced the original thermostat at 90,000 miles because at highway speeds it would run slightly cold and took a while to warm up from cold. The new wahler replacement takes just as long and will actually run cold intermittently when not on highway. Occasionally it won’t deviate from center on the highway.
Cons: runs cold, slow to warm up, intermittent cold running
Vehicle:
BMW
Mileage: 144841 km
My tstat is wahler. People said that it was better than Mahle. But I found it similarly poor.
Cons: similarly poor performance
Vehicle:
BMW
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
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