mpg on my 04 5.3 Yukon

[Imlow78]

What size tires do you run

I run a 255x75 17.

Shannon

 

[Flash1976]

Hi everyone, I was wondering if 12.9 mpg combined is normal on my Yukon with 150k miles. What can I can check, clean or replace on my Yukon for better gas mileage besides better diving habits. Any help is appreciated. Thanks

Your MPG is pretty normal. I have 2000 4x4 Tahoe, 5.3. Owned it since 40,000 miles, and now have 505,000 miles. I get about 11 - 12 MPG around town, and 15-17 MPG on long open road drives. The mileage is only 1 MPG less than when I first got the rig. No engine work to date.

 

[M123]

I do get 19.5 mpg (12 liter/100km mixed driving.
I run stock air filter, pure synthetic oil and our 98 octane With 5% Ethanol in it.

I change my oil very often, use the longer oil filter and yes I know the longer filter the more exposed and less force it can take before it do cave in. I use Wix. What have this with the mpg you maybe think, because the por design of the lifters and pushrod I try stay one step ahead and happy lifters makes a happy engine.

I think the mpg are in the large run are affected by the climate you drive in. Here it's around 300 meters (984,2 ft) above the sea (+/- 100m), dry and cold.

 

[bigdog9191999]

Hi everyone, I was wondering if 12.9 mpg combined is normal on my Yukon with 150k miles. What can I can check, clean or replace on my Yukon for better gas mileage besides better diving habits. Any help is appreciated. Thanks

wondering if there has been any change as it has been a little while. there are several things that folks dont think of that can add up to some mileage differences. things as simple as tire tread choice and pressure.