Ive been putting 87 in but google says thats bad

Ha! @OR18TRD pokes in 1st gen section so much shooing him would be a full time job!

 

You’d be surprised at the people who log in here and read the fake info thats already been given and take it at face value. A simple browse of the truck manual clears things up.

Don’t you have some nitpicking you can do over in turd gen section? Plenty of bogus info and jokes going on over there but nobody really knows if its true or false, then continue spouting it off like parrots without any understanding.

 

Higher octane gas is needed in vehicles with higher compression. High octane gas can withstand higher compression without detonation or pinging. Toyota designed the tundra to run on 87 so no need to go higher unless you are supercharged. Higher octane gas also has detergents that lower octane gas does not but $2.49 per gallon vs $3.29 can get expensive. Smart $$ is run 87 and add the detergents that you want, just be sure it doesn't contain kerosene.



Ok I gave my 2 cents, now back to the good stuff.


Now that is high octane fuel

 

She’s busy at my house, and can’t talk right now.

 

Pfff, we don't need OP to argue amongst ourselves and shoo 2nd/3rd genners away.

 

Argue is such a negative term, I would go with debate.


Now we can argue/debate which term to use

 

We can.......squabble about that too!

 

I just visited the Ukraine Embassy a few weeks ago on some official business. Why does cooking oatmeal seem so delicious?

 

Now here's my . 02¢ worth. The owners manual says "87 octane or HIGHER". I don't check my milage so I can't give you numbers but I find that my engine runs better and I go farther on a tank of gas by running 89 octane. So I will only use 89 or higher octane.

 

You should hand calculate your numbers. This is a good article lending some credibility to your theory (see last two paragraphs).

Now that fuel costs have stabilized at fairly low pricing these past few years the extra bite for the higher octane may make it worth a try for me. I’ve a good historical log with the 87 octane so a few tankfuls of 93 should make a difference known quickly.

http://www.agcoauto.com/content/news/p2_articleid/315

 

Post up the results. We may need to factor in the additional cost of fuel as well as mpg.

 

I can almost tell you its not worth it upfront. Its worth a shot though.

 

Since when is this 1stgenonlyTundras.com??

It’s a younger brother’s job to pester older brothers in their room.

 

True. I just shoo em when they post ABOUT their stuff in our section.

 

That 5.7 does have power.

 

Shhhhh! Don't give them acknowledgement! Then they'll never leave!

 

But the million mile motor is the 4.7

 

Yes, I would squabble that, yes.

Hoopty is correct multiple times.

 

Google also says my runny nose is cancer, so I think you’re okay.

 

Probably true in the state of California.

 

California says google can cause cancer

 

This was a thread about octane not cost. Granted running higher octane probably isn't cost efficient but I feel it's better fuel to run so I don't put cost into the equation. I just buy top teir fuel from whichever name brand gas station has the best price.

 

A toyoya master tech told me toyota’s require a certian octane. 87 for example. The timing/spark is relying on that octane for timing. Higher or different octane changes the timing of the detonation which changes performance and gas mileage. Yes sensors compensate to correct but again it changes timing fuel milage and performance.

 

Lower octane is what causes detonation and/or carbon build up that high mileage engines might have. I don't agree with your master tech. Before I retired I held a master tech rating for most marine engines and one of my sons is a Toyota technician and the other runs a boat repair shop. Many people over time have not agreed with me and that's fine as not every master technician is knowledgeable as is proven by one at my son's job and the info that you have received.

 

This whole thing isn’t even a thing if we were talking about a 5.7L.

I know from my experimenting that they will burn any and ALL gas 87-94 octane. Over and over again.

 

Hows this for carbon build up? Think this is a shot down the #2 plug tube. Not sure if the camera is making it look worse. Whats the pros tip on carbon removal?

Truck is purring currently and running fine as best as I can tell without hooking it up to an analysis machine. New plugs, coils, and have been on 87 octane.

 

@PCJ I'm betting he meant ignition, not detonation. Ignition timing will change when you go from 87 to 93 octane.

Lower octane alone does not cause detonation. High compression or forced induction or heavy load at low rpm with too low of an octane can experience detonation. Outside of that a red hot racing motor using too low of an octane can experience detonation.

Under normal driving conditions these motors are not likely to have detonation, so that point is moot. Run what you'd like in your truck.

I have run on 91 for two months as an experiment, I saw slightly lower gas milage on my commute to work with 91. I went back to 87 and the mileage recovered, throttle even seemed more responsive. I've run 87 for 11 years in my truck and never pings. When I swapped my headers I looked into the exhaust ports, no carbon build up to speak of. For these trucks dont buy shitty gas, but any quality 87 will be fine.

 

I really didn't think this thread would go this long. It's not really something that is to be argued/debated/squabbled about. If we were discussing amplifier power ratings, I would understand since there is no standard of measure that manufacturers follow and government oversight to ensure they adhere to these standards.

In other words, 100 watts x 7 channels amplifier ratings is marketing gimmick.
Can you run 87? Yes, Toyota designed the engine to run on 87.
Can you run 93? Yes.
Is there any advantage to 93? In terms of power, no. Cleaner engine, yes because 93 has detergents.
Your engine will not knock, ping or spontaneously externally combust because of 87, 89 or 93.

 

The 4.7 will also. Toyota built the engine and tuned it for 87 but you can go higher. If the engine was built and tuned for 93 then you can't go down. That is basically how it works most of the time, there are vehicles that can adjust to higher octane fuel and turn more power then switch to accept lower octane fuel which means lower power.