GX470 - premium fuel??

[cisco12kid]

I've tried all levels and found absolutely no difference in mpg or power. I've been running regular unleaded for the last 50k miles I'd say. no problems.

What year is your gx?

 

[GXO]

I will say this....I did run a tank of ethanol free 89 octane on our trip out west and I saw a jump in GPS measured mpg. That was 55 gallons of eth free. No other mixes seem to matter on the 03 GX aside from ethanol free. It loves the stuff! We managed 14.5mpg on the total trip out west and back on both GXes on 37s and full loaded for adventure.

 

[VSPro9]

483,000 miles on my truck, previous owner and i both used regular for its entire life. Idk about performance loss but i average about 15mpg with 33s and lift.

 

[HomersCanyonero]

I think @GXO was saying ethanol is nothing more than snake oil when it comes to mpg on the gx470.

Meaning ethanol sucks!

 

[GXO]

I think @GXO was saying ethanol is nothing more than snake oil when it comes to mpg on the gx470.

Meaning ethanol sucks!

Ethanol is a lower potential energy fuel source. It burns less efficiently but dilutes non eth fuel so there aren't as many emissions.