Towing in the mountains question

Trailer dry weight 4300 lbs. 2018 Tundra 5.7L.

Is it Ok to just use tow haul mode or should I shift down a gear as well?

 

That’s about how much my trailer weighs dry. D & TH and pin him! Lol

 

My trailer weighed 4318lbs on the scale.

Towing in the mountains in S4 is perfect. It will hold almost any speed i want with ease and the trans will not heat up much in 4th

 

That’s about what our camper weighs. I always use T/H and also use the sport shift all the time for more control of the power band.

 

T/H and probably S4 or S5(or lower), whatever keeps the torque converter locked.

 

S4 will lock it s5 will heat the hell out if the fluid

 

Even in S4 some steep hills will bring the pam temps up to and over 230 degrees. If on the flats with no headwinds S5 works well but as soon as that TC unlocks drop it back to S4.

 

On faster stretches yes; I’ve gone down to S2 or S3 depending on conditions, towing heavy up a slope. Revs high=good, keeps fluids flowing and cooler and everything happy.