Blueinterceptor
Full Access Member
- Joined
- Jan 20, 2016
- Posts
- 946
- Reaction score
- 528
My 6.2L mileage experience
- Thread starter Blueinterceptor
- Start date
Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.
Blueinterceptor
Full Access Member
- Joined
- Jan 20, 2016
- Posts
- 946
- Reaction score
- 528
89 octane ethanol free Wawa gas
next I post some results for 93 octane premium with ethanol
next I post some results for 93 octane premium with ethanol
Blueinterceptor
Full Access Member
- Joined
- Jan 20, 2016
- Posts
- 946
- Reaction score
- 528
These were Highway miles only
with the exception of the of the driver summary which had 4 miles of non highway miles included
with the exception of the of the driver summary which had 4 miles of non highway miles included
GoNoGo
Full Access Member
My '23 Suburban HC with 6.2L trip-2 meter has never been reset since leaving Arlington factory.. so Hwy miles, rural miles, city miles, idling at drive-thru windows, occasional 10 minute morning warm-ups and etc is a Lifetime combined 16-mpg using only good Premium gas.
.
.
Last edited:
swathdiver
Full Access Member
We get better mpgs with some ethanol in the fuel. It cools the fuel down and acts as a knock retardant.
Blueinterceptor
Full Access Member
- Joined
- Jan 20, 2016
- Posts
- 946
- Reaction score
- 528
I haven’t experienced any knocks yet.
I could drive it for a day and knock that in half 
swathdiver
Full Access Member
Not saying yours is but knocking is very hard to detect by ear these days, have to use a scan tool which gives more accuracy.
Blueinterceptor
Full Access Member
- Joined
- Jan 20, 2016
- Posts
- 946
- Reaction score
- 528
I did not know that.
DuraYuk
Full Access Member
- Joined
- Sep 17, 2022
- Posts
- 807
- Reaction score
- 578
Its not terrible for highway. My duramax averages 22 in the city and 30mpg on the highway. Lifetime mpg is somewhere around 26 with mostly city driving. Best I've gotten is 34mpg on the highway at about 75 mph.
Similar threads
