Now that my engine is broken in with over 1,900 miles and an oil change, I run my first tow after picking up my new RV (a 24' travel trailer weighing about 5,000 empty). I also conduct an impromptu MPG test to see how the new 6.6L L8T gas engine with 10speed Allison transmission performs while towing. If you didn't catch my unladen MPG run, check out this video here:
   • I Try Again...Highway MPG Test with M...  

00:00 Intro
02:38 Initial Impressions
05:43 Check Trailer Wiring Error
06:36 Why I Chose a 3/4 Ton Gas Truck
08:52 Tow/Haul Mode
10:55 Error Message
11:57 MPG Results
13:10 Conclusion

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