Ok guys, I need a little help with this one. I've figgured out this much, the more worry that arises about global warming, the more my mpg's go down. So I think Al Gore is causing my problems. Serioulsy though, over the last like 2-3 months, my gas mileage has been going lower and lower. I used to be able to get about 16 cruising at about 65, now i'm getting about 10-11. If i do city driving, i'm down to 8 or 9 from maybe 12-13. I'm not hard on the throttle, usually keep it at 2 and if i really need to move, i'll get it up to 3k rpm, but thats it. The thing runs fine. I haven't noticed any power loss... besides the fact that its a landcruiser. Here's what the rig is. 3" lift, arb w/8274 warn in it, custom rear bumper, but nothing to it, sliders, and 305/70 bfg muds with about 35-40% tread left and 165k mi total on the odo. I havent repacked my front wheel bearings or birfs in about 2 years, but I think it should still be ok. It's only been about 35k mi. since it was done. I do have a check engine light on, but last time i checked it, it was still a code 420 which is just a bad o2 sensor. Could those bastards be doing it? AAARRRGG... ok any ideas? Thanks for any and all help. Thats the truck, nothin fancy.... cept the fender flares ain't there any more.