Quote:
Originally Posted by redpoint5
I believe the Prime has an eCVT, so there's no need for a transmission cooler since it doesn't have a torque converter (where slipping occurs and waste heat accumulates).
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Not so sure if the torque converter is really the one to blame, considering many conventional automatics are suitable for towing, and some extraheavy trucks feature one instead of clutches which also tend to overheat under some conditions. But anyway, considering the power-split device relies on a planetary gearset, just like the wheel hubs of some large trucks, this seems quite a safe setup for towing, not to mention Toyota claims one of the main advantages of the HSD system to be its scalability allowing it to fit from subcompacts to larger SUVs and even some commercial trucks.