Recent content by DISAPPOINTEDOWNER

i had one for 6 mo. 12.5 best i could get sold it got a trail boss with 5.3 it is getting 17.8 mpg ave

YES I ALWAYS RUN 91 BUT I DO FUEL AT THE SAME PLACE EVERY TIME I DID FIND SOME 93 I FILLED UP WITH AFTER THE TEST . I WILL REPORT IF I SEE ANY CHANGE

DID THAT, AND IT WAS 14.1 SORRY I FAILED TO MENTION I MANUALLY CALCULATED IT SINCE IT CHANGES ONCE YOU HIT A FEW STOP LIGHTS

MY TEST WAS MY DAILY COMMUTE TO WORK IS 48 MILES ONE WAY THE NO OTHER STOPS 76 MPH ON THE CRUISE CTRL AVERAGE AT THE EDGE OF TOWN WAS 14.3 IT DROPPED IN TOWN A LITTLE

YES SIR ... SAME HWY TO WORK SAME SPEED RUNNING THE CRUSE CONTROL SIMULAR WEATHER CONDITIONS MY WORK TRUCK 5.3 L 2019 TRAIL BOSS GETS 18.3 SAME MODIFICATIONS FLOW MASTER 50 SERIES SAME LIFT, SAME TIRES/WHEELS, 342 GEARS . I KNOW THE ZR2 HAS 323 GEARS W/10 SPEED TRANY BUT THE ENGINE ALSO RUNS...

NEW TO THIS SITE: NEW OWNER OF A 2023 ZR2 LOVE THE TRUCK BUT THIS FUEL MILAGE IS REDICULOUS! I HAVE HAD A 2014 GMC AT4 (6.2) SINCE NEW , NOW HAS 82000 MILES HIGHWAY 20-21 CITY 15-16 RUNS GREAT ALL AROUND GREAT TRUCK 0 MODIFICATIONS... NEW ZR2 13 CITY 14.1 HIGHWAY 3000 MILES STOCK ADDED A 50...