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"Wanted - young, skinny, wiry fellows, not over 18. Must be expert riders willing to risk death daily. Orphans preferred"
Original newspaper add placed by William Hepburn Russell, founder of the The Pony Express
don't have an FJ yet, but in Colorado and other altitude states, they have 85, 87, and 91 octane available....so maybe 85 octane could be an option?
I also live in Colorado, and don't have my FJ...yet (this spring). I also run 85 octane in my Jeep Wrangler. I was told by a dealership once that owner's manuals don't say anything about 85 octane because most states don't have it avaiable (altitude thing I assume). This is a topic I will follow closely because I was bummed to hear that Toyota recommends premium and mid. Any info is appreciated...especially Colorado or high altitude info.
I'm running the regular here in CO which is 85 octane. Haven't heard any knocking or had any trouble. Power seems good. Gas here has ethenol in it up to 10%. Getting 19 - 20 mph. No complaints other than the cost of gas in general.
I also live in Colrado, and don't have my FJ...yet (this spring). I also run 85 octane in my Jeep Wrangler. I was told by a dealership once that the owner's manuals don't say anything about 85 octane because most states don't have it avaiable (altitude thing I assume). This is a topic I will follow because I was bummed to hear that Toyota recommends premium. Any info is appreciated...especially Colorado or high altitude info.
Thanks, Tye
Welcome Tye,
I live at 7,200 ft and run 91 since that gives me max HP and TQ and I need all I can get at this altitude. As well, I have averaged 23 mpg since owning the FJ and putting on 15,000 miles so I see no reason to run RUL (85 at high alt). But, the FJ will run just fine on it (85, 87 or 91). The ECM was designed to handle lower octane fuels and no harm will come. I would recommend, running 1/2 dozen tanks on 85 and another 1/2 dozen (in a row) with 91 and see if you notice any differences. If not, just run the 85 octane.
And yes, at high alt (above 4,000') the octane required by engines is lessened by 2 points. So 85 here is = to 87 at sea level. 91 here is = to 93 octane at sea level. That's because the air is less dense and the octane requirement is lower because of the lower compression. It's different however if you are supercharged or turbocharged.
DEWFPO
__________________ 2007 FJ, 5AT, Sun Fusion Yellow, CQ, UP, GY, RB, 2Q, EL, VS.
"Wanted - young, skinny, wiry fellows, not over 18. Must be expert riders willing to risk death daily. Orphans preferred"
Original newspaper add placed by William Hepburn Russell, founder of the The Pony Express
I'm burnin 93, now that I installed 6" lift with 35's, started to get a little ping and knock stepping into the gas hard. This was never a factor with the lower grades before the upgrades!
I've been running 89 octane since day one when I got my FJ, back in April of 06. Last weekend I passed to Costco gas station and they didn't have 89 cause they don't carrie it, so I bought 91. I noticed that I actually get more MPG with 91 then with 89.
Cheapest I can find (87). Haven't heard any knocking or had any problems. Avg 18.74036 Best tank 20.6659 Worst tank 16.59553.
I have an 08 4x4, with AT, factory tires and roof rack. So far I have put 11780 miles on it. I'd love to say it was all off road but I can't. So far it has all been commuting to work. I would say 75-80% of this is highway driving.
I tried the higher grade and didn't notice any difference-mileage or performance. I live at 8500' and commute to 6000' for work and the FJ gets up the hill with no noticeable changes.
2007 FJ, 5AT, Sun Fusion Yellow, CQ, UP, GY, RB, 2Q, EL, VS.
Re: What grade gas do you run?
Make a living...LIVING
I would say 75-80% of this is highway driving.
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