What octane gas are you using for your T4R?

[Biznitch15]

What octane are you putting in your T4R or Tacoma? Aside from price, why do you use that octane vs others?

 

[ST1FLER]

87 just like the manufacturer says to use

 

[bloodninja]

87. There is no reason to use anything higher in this engine, unless you're using forced induction, or have advanced timing to the point that you need to avoid detonation.

 

[1engineer]

What octane are you putting in your T4R or Tacoma? Aside from price, why do you use that octane vs others?

Don't know why you asked "why" in your OP. There is only one reason to run higher octane fuel and that is knock prevention. Actually that is the only reason those fuels are offered.

 

[philsey]

Oh crap! Not another "which octane and why" thread ... which spawns a half-dozen useless and unfounded theories/speculations by ppl smarter than Toyota engineers.

/refuses to participate/
/gets more coffee/

 

[sandcrawler]

/throws gas on the fire/

Welcome to Land Cruiser Owners On Line
When high octane fuel is used, the likelihood of detonation is diminished and the engine management system can advance the ignition timing further than that with standard fuel. Resulting in higher efficiency, greater power and torque as well as reduced fuel consumption.

However, in the range of Prado petrol engines, the rate of ignition advance is very slow indeed. This means that one needs to run high octane fuel for many km before any change in performance or economy is fully realised.

1GR-FE
An updated version of this engine features Dual VVT-i, increasing output to 254 hp (189 kW) and 270 lb·ft (366 N·m) on 87 octane and 285 hp (213 kW) and 289 lb·ft (392 N·m) on 91 octane
:bolt:

 

[Bstrom]

I lost somewhere between 30-40 miles per tank using regular, so went back to mid grade and am getting the 18-20 average most of us see.

Interesting to read that the computer will auto advance timing for best power, torque, etc...

 

[ArmedBear]

I live at a high elevation, where is the poll option for 85?

 

[1engineer]

I lost somewhere between 30-40 miles per tank using regular, so went back to mid grade and am getting the 18-20 average most of us see.

Interesting to read that the computer will auto advance timing for best power, torque, etc...

1. It wasn't the octane. Octane adds nothing to the energy of the fuel.
2. You need several thousand miles of running a higher octane for this to work and then you MAYBE might get a few more HP. I calculated it once and you will end up spending a few grand to get a few HP over the life of your 4Runner. Good luck.

 

[philsey]

[MENTION=29376]sandcrawler[/MENTION]

Great metaphor!

 

[NoDak]

opcorn:


so I will add my popcorn to the mix ....

1. 87 and 89 here is the same price (with ethanol), can only get 91 w/o ethanol

2. only use 89 in the 14 4Runner and 16 Tacoma.

 

[Jabberjaw]

AvGas 100LL (100/130 Octane)

 

[KidVermicious]

This thread makes the baby jesus cry.

 

[USNA91]

I just recently filled up with ethanol-free 91 because of the ethanol-free, not the octane rating.

I know that's smart for smaller engines like snow blowers. Not sure about vehicles, though...

 

[FrontRange4Runner]

I live at a high elevation, where is the poll option for 85?

I was thinking the same thing! I ran 87 for the first 25k miles. I decided it was pointless at this altitude and went with 85. No noticeable difference in 25k miles. No knocking or lack of power. That said, 85 is only sold in very certain areas, and a lot of people don't even know it exists....

 

[jaboki]

This thread makes the baby jesus cry.

Nope, that's the TRD SC thread.

 

[ST1FLER]

You only have to run 91/93 in the TRD PRO

 

[Engineer]

with 105 my runner runs like a raped ape

 

[KidVermicious]

with 105 my runner runs like a raped ape

If you run 116 octane your exhaust smells like roses.

 

[Blitzkrieg]

I run my old french fry oil in mine. She knocks and grumbles but I get to eat a lot of french fries and watch people drool at stoplights when they smell my exhaust.