low fuel light is suppose to kick on around 3 gallons left, IIRC
As for mileage, with these 33s and driving normal to aggressive, BEFORE my dual friction clutch install, I was seeing sticker mileage for my truck - 15 city, 19 hwy. Now that I have a new clutch I'm driving super easy until breakin mileage is done. I typically see about 100-115 miles per 1/4 tank for the first 1/4 tank. Between 3/4 and 1/2 tank she sucks the gas some, then 1/2 tank and lower I see about 90-105 miles per 1/4 tank.
When I had the stock 31 BFGs I'd see 16-19city and 18-21.6 on hwy. That was mixed driving.
One of my best trips milage wise was going to Phoenix, AZ from Las Cruces, NM driving at 75-85 on the highway. That was the first week I owned the truck (see sig) and truck was at ~3000 miles. I didn't fill-up for gas until I was about 60 miles outside of phoenix. The needle was about a needle's width above the 1/4 left mark. I probably could have made it to Phoenix without filling up until in Phoenix.
EDIT: spelling errors
April 7, 2005 the arrival of:
'04 FX4 Level II - 5spd manual...me likey!
Last edited by Lefty04LevelII; 01-15-2007 at 01:40 PM.