Towing in the mountains with a gasser????

RinconVTR wrote:

Hybridhunter wrote:


Say what? There a fewer similarities than differences, Clutch to clutch shifting, any gear torque converter locking, and robust overdrive ratios that are used for towing are not even the same technology as years past. Each of those items is a game changer.

Add in semi synthetic low viscosity factory fill, and completely redefined operating temperature range, and you have what amounts to a new technology.

If you believe that modern transmissions "are not that different" then are familiar with neither.

Say what? You better brush up on "technology".

Clutch to clutch shifting ---- completely different trans type and not used in trucks nor any towing vehicles I am aware of!

any gear torque converter locking --- not any gear, that I know for sure. It may very well "lock up" in more higher gears than decades ago, but definitely not all gears. Say it does...this would not be new tech.

The ZF 6HP26 (IE- Ford 6r80 6 speed) was the first six-speed automatic transmission in a production passenger car. Released by ZF Friedrichshafen AG in 2000, it was manufactured by ZF Getriebe GmbH in Saarbrücken, Germany.

The ZF 6HP26 uses a Lepelletier epicyclic/planetary gearset, which can provide more gear ratios with significantly fewer components. This means the ZF 6HP26 is actually lighter than its 5-speed predecessors. It also has the capability to achieve torque converter lock-up on all six forward gears, and disengage it completely when at a standstill, dramatically closing the fuel efficiency gap between automatic and manual transmissions.

If I recall correctly, it uses no bands, and clutch to clutch shifting, which you are mistakenly thinking of as dual clutch transmission.

RinconVTR wrote:

robust overdrive ratios --- "robust OD ratios"? Uh, whatever that means. Regardless, different OD rations has little to nothing to do with technology.

RinconVTR wrote:

"Robust" implies strength, as in they are strong enough to withstand the load. Dismissing the long standing idea that towing in overdrive will do harm.

semi synthetic low viscosity factory fill --- not new tech, nor is full syn. Its simply in widespread use today.

That was my point.....

RinconVTR wrote:

completely redefined operating temperature range --- only based on running semi and full synthetic oil that can handle the higher temps. Nothing more. And we aren't talking anything drastic either. I recall the very same operating and towing trans temp ranges 3 decades ago as I do today.

The metallurgy, clutch materials, hardness specs, seals, fluid spec. Name one transmission in a light duty vehicle that had a 200f operating temp unloaded by design? Quit pretending, other than planetary gears, it is a new world. The Toyota's trans is not the same, but the point is.