Originally Posted by
cyclopathic
on OP: how about instead putting an additional cooler, just helping existing one to work better? For example Watter wetter in coolant, better synthetic oil in CVT, magnetic plug to keep contamination lower?
Certainly a high-spec CVT fluid would not degrade with heat so readily, but then... Do we know that CVTF-J4 (AKA Nissan NS-3) is not a synthetic fluid already?
Magnetic plug - Maybe, but surely the internal gearbox filter would trap any such particles?
As for water wetter... Mixed reviews on the 'net, with most suggesting around 5~10 Fahrenheit temperature differential. So yeah - could help a *bit*, but I'm thinking of long, hilly journeys where a CVT can get really hot and bothered. Even with Water Wetter installed, I don't think it would improve the heat rejection enough to prevent overheating.
Of course, without data on exactly what temperatures the CVT fluid reaches during normal, gentle and severe operation, it is difficult to say. Must find those PID codes!
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View my fuel log 2014 Mirage 3 CVT 1.2 automatic: 47.9 mpg (US) ... 20.4 km/L ... 4.9 L/100 km ... 57.5 mpg (Imp)