91 vs 93 octane
Instructor
Joined: Jan 2021
Posts: 1,242
Likes: 617
From: NH
Folks from what I understand it is very difficult to hear, if at all, pinging/knocking on less octane fuels because computers are constantly adjusting. Its not like the ole days when you put a load on the car it would and you could hear it. The higher octane will give better mileage as biff44 stated. I too have experienced the same, better mileage.
For the few xtra cents, for me, its a no brainer, higher octane, especially when its stated on the gas cap.
For the few xtra cents, for me, its a no brainer, higher octane, especially when its stated on the gas cap.
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Joined: Nov 2018
Posts: 628
Likes: 184
From: OK
From markuson on the link posted by biff44...
"This same Q goes round and round in circles every year or so.
"My conclusion:
"If you put 87 in...your LX will instantly BLOW UP.
"Or maybe...you’ll just save a crap load of $$.
"I know what I’d do..."
Knock sensors will prevent knocking before the knock begins. The hp difference is 3 hp. Redline's are the same for LX, LC, and Tundra engines. LX and Cruiser engines are made entirely in Japan with 100% Japanese parts; the trucks are made on the same dedicated assembly lines. Tundra and tundra engines may be made in both Japan and the US.
No records here or anywhere else of a blown engine with 87 octane.
I use non-ethanol whenever possible as ethanol tends to rot/dissolve rubber over time. Weasel **** is not legal for engine fuel in Idaho...when was it made legal in Mass?
"This same Q goes round and round in circles every year or so.
"My conclusion:
"If you put 87 in...your LX will instantly BLOW UP.
"Or maybe...you’ll just save a crap load of $$.
"I know what I’d do..."
Knock sensors will prevent knocking before the knock begins. The hp difference is 3 hp. Redline's are the same for LX, LC, and Tundra engines. LX and Cruiser engines are made entirely in Japan with 100% Japanese parts; the trucks are made on the same dedicated assembly lines. Tundra and tundra engines may be made in both Japan and the US.
No records here or anywhere else of a blown engine with 87 octane.
I use non-ethanol whenever possible as ethanol tends to rot/dissolve rubber over time. Weasel **** is not legal for engine fuel in Idaho...when was it made legal in Mass?
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Joined: Jul 2014
Posts: 569
Likes: 56
From: Ontario
91 or 93/94 will allow more timing. You will probably see 10-15hp increase. Now, with a dedicated high octane tune, it would likely be 20+hp more than 87 / stock tune. If you go for the magnusson (or other) forced induction, you will want to run the highest octane available.
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