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Whiskeyjack44 wrote:
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.
ScanGauge .. Not familiar with it. Interesting website, tho, so I'll sure check into it. Since they offer the S/G II, D & E, I have a little homework to do. Aside from monitoring, tho, I guess I'm wishing the 4.6 had a little more torque so the computer wouldn't feel obliged to downshift as much as it does. OTOH, a 4.6 just ain't exactly a brute so I guess I shouldn't expect too much from it. I reckon locking out 6th .. especially when towing .. will help a lot.
Thx very much for for the info. It's a real help hearing of everyone's experience.