Looking to find the best MPH for MPG for a large SUV (Yukon XL) when towing a boat.?

Question

I have a 2001 Yukon XL and will be traveling for around 5 hrs. I normally go 70 but willing to reduce speed for better MPG. Is there a good way to figure out the best MPH for the BEST MPG>

Answer 1

not that i know of. i'm sure some scientist already figure it out. Slower you drive, the better milage (not driving at all won't cost you a dime in gas, suprise lol). because it gets less drag from wind resistant. Anyway, drive to the speed limit, on the highway, drive 60mph.

Answer 2

Keep your engine RPMs down. Experiment a little. Try and find the lowest RPM at which you can cruise.

But you're also towing a boat and driving a Yukon XL. You're still probably pushing single digit MPGs, man.