Since I purchased my 2004 V8 new, I've run 87 octane. Runs just fine. Sometimes on long highway runs I'll drop in 91 octane but have never noticed any difference.
I run 93 in my ‘06 2UZ. I’ve done numerous MPG calculations on 87 & 93. I get 20.8mpg hwy running 93, on 275s, driven daily- just hit 240k miles. Am I just imagining that higher octane reduces the amount of carbon deposit on valves and pistons as well? But hey to each their own.
Locally 91 Octane fuel contains the least ethanol. Where my 4Runner isn't driven everyday I'm assuming minimizing the ethanol helps keep lines and fittings from rusting and the fuel should have a longer shelf life. That's my theory anyway.
I believe the only true advantage of running higher octane fuel in our 4runners is if you are driving in very high altitude zones like say, Colorado or New Mexico... this is what I gathered from "Engineering Explained", (youtube channel).
It's actually opposite. At high altitude, the octane requirement drops. If the manual calls for 87, you can probably run 85 in colorado; but that's given you will not use that tank of fuel in lower altitude. So it's always safe to just run whatever manual recommends.
That's pretty much the case with every Lexus (until around 2012 when they allowed you to use either in many models). Pretty much any engine can make a bit more horsepower if you run high octane and adjust the tune, so Lexus does just that to make the Toyota engines they stick in Lexus's seem more premium because they have a 20hp bump.
Wait, people put 91 in their 2UZ-FE? What a waste. The things run a 9.6:1 compression ratio......it's not like they are going to suffer from pre-ignition on 87. My old Tundra has 376,000 km of hard winter Canadian miles, and its run 87 it's whole life.
Get your Evolution T-shirt here: canadian-gearhead.myspreadshop.ca/
Thanks I leaned a lot from you guys,thanks for sharing.i got 2006 4Runner 395000 miles runs good.
Thanks for watching!
I run 87 in both of my vehicles. The important thing IMO, is run the "best" gas. Every gas has different additives. My personal favorite is Chevron.
Since I purchased my 2004 V8 new, I've run 87 octane. Runs just fine. Sometimes on long highway runs I'll drop in 91 octane but have never noticed any difference.
Good to know; I've often wondered about this!
I put Costco 93 in as they don't have 91. It's super cheap here in GA anyway.
I run 93 in my ‘06 2UZ. I’ve done numerous MPG calculations on 87 & 93. I get 20.8mpg hwy running 93, on 275s, driven daily- just hit 240k miles. Am I just imagining that higher octane reduces the amount of carbon deposit on valves and pistons as well? But hey to each their own.
Locally 91 Octane fuel contains the least ethanol. Where my 4Runner isn't driven everyday I'm assuming minimizing the ethanol helps keep lines and fittings from rusting and the fuel should have a longer shelf life. That's my theory anyway.
Hey when you ran your headers did you have to put a 02 simulator on? Totally off topic and I’m sure you’ve spoke about it before just haven’t seen it.
Good question.. also are you running g the DT headers with cats or long tubes?
I'm running the short tubes with the original cats welded on so no simulators required
I run 89 and notice a bit of mpg too
I had a supercharged car once and the premium gas makes it 100% NOT worth it.
I believe the only true advantage of running higher octane fuel in our 4runners is if you are driving in very high altitude zones like say, Colorado or New Mexico... this is what I gathered from "Engineering Explained", (youtube channel).
That makes sense!
It's actually opposite. At high altitude, the octane requirement drops. If the manual calls for 87, you can probably run 85 in colorado; but that's given you will not use that tank of fuel in lower altitude. So it's always safe to just run whatever manual recommends.
In my state you can’t even get 87 it’s 88 which probably isn’t much of a difference?
Pareto of the confusion is created by the Lexus GX470 where Toyota calls for premium for that 4.7.
That's pretty much the case with every Lexus (until around 2012 when they allowed you to use either in many models). Pretty much any engine can make a bit more horsepower if you run high octane and adjust the tune, so Lexus does just that to make the Toyota engines they stick in Lexus's seem more premium because they have a 20hp bump.
Wait, people put 91 in their 2UZ-FE? What a waste. The things run a 9.6:1 compression ratio......it's not like they are going to suffer from pre-ignition on 87.
My old Tundra has 376,000 km of hard winter Canadian miles, and its run 87 it's whole life.
Yeah I always do 91, gets me 1-3 mgs higher and 20 mpgs on the highway.
Никто не использует сжиженный газ пропан-бутан?