Tundra 4.6L capability?

Luv2Q wrote:

Whiskeyjack44 wrote:
We have a 2012 4.6 Tundra 2wd DC also w/8200 tow capacity. We tow a 3700lb wet RPod. If my experience with the RPod is any indication, you're gonna be in heaven towing at the level you're describing. I can climb any pass in Washington State at pretty much any legal speed I desire. No, the little 4.6 probably couldn't comfortably tow any 8200 lbs where I tow, but I'm pretty sure it would do well with quite a bit more than what I tow. I do lock out 6th, as the transmission searches some when towing with 6th enabled. On tougher climbs I sometimes also lock out 5th, but can still keep up with most of the big boys.

Good info & thanks. What kind of mileage numbers do you get when you're locking out 5th or 6th? I'm still experimenting myself. What seems most comfortable when towing is to use the T/H switch + the tranny' s "S" mode. Seems like the shift points are a little farther apart, and it's not as quick to hunt for a lower gear.

Thanks

The worst towing mileage with this combo has been 10.5 mpg. The best has been 14.4. Most tanks have been in the high 12 to mid 13 mpg range. The RPod sits a little high, so it does push some wind. Something like a Casita would hide better behind the Tundra and might do a little better.

My ScanGauge also indicates that locking out 6th, and sometimes hand shifting to 4th really lessens the load on the tranny, as the real time tranny temps don't swing high nearly as much as when always leaving 6th enabled in tow/haul. The S/G is a real help here, as the dash trans temp gauge never moves--probably not until the fluid temp would be nearly out of hand. It actually seems to be not much better than a fancy idiot light, not enabling you to be proactive with your tranny temp monitoring.