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Very hard to see and hear properly off my crappy little icrapple phone BZ Mate but appears like it’s hauling pretty well to my nuffy knowledge and senses
Top secret…….Australian’s have for decades been religiously installing OEM 76.5C Tropical thermostats in our TD42 engines across this massive continent, foolishly (guilty too) even in southern mountains with snow atop.
Fact: There is 3 x OEM thermostat variants available, 76.5C / 82C / 88C and all have the exact same top end maximum temperature tested once fully open. Unsure of your yearly climate there in Brazil but it is definitely worth running a suitable TS to suit (seasonal changeovers maybe required) to have your lowest operating temperature somewhere greater than 85C with a hopeful system average of 92C which is truly their “Sweet Spot” for power & efficiency