87, 89, or 91? which gas do you use?
 

Hello everyone,
just curious which gas do you use on your vehicles.

Toy sales dude told me its ok to use regular unleaded (87) not unless you have a high performance vehicle.

he also mentioned that once you start using 87 to stick with it so it wont screw up the gas sensor or throw it out of spec (or some bs like that) when switching to higher octane gasoline.

another toy sales dude from another dealer also mentioned that i should use 89 and above.

care to comment on this??

which gasoline should i be using on my 02' v6 taco??

*bah* nevermind.. found this thread
https://www.yotatech.com/forums/show...&threadid=2318

but still feel free to reply..
Bud

89

I use 89 but after reading that earlier thread I may switch to 87 just to see if I can tell the diff between the two...

I use 93 Octane (BP) because of my Supercharger. Prior to that I was always told to use whatever was in the owner's manual since that was what the engine was designed to use.

whoops, i replied on that thread that you linked us to.

but i use 87, because it is (or i am) cheap, and i dont need anything higher.

No supercharger here (damn I wish) but I always use 93 octane super unleaded.

I use the highest test I can get here, which is 91.
My timing is set to stock also.

Dealer told me with 170K on my heads that any carbon in there will raise the compression ratio which is true.

Engine has far less since it's a new shortblock.
I'll get the Snap On injector service done some time, and that will clean out some carbon from the upper combustion chamber, thus lowering the compression ratio a tad.
May be able to run 89 then.

If I run anything lower than 91 now, I ping.

I, like Corey, use the highest I can find...normally 91

High-Test
 

My '89 truck has a serious sweet tooth. Pings on just about anything but primo. :pat:
Jim

I use 89, seems to run better than on 87.

Since my first day of driving my 4runner..I use to put 92 but past a few years......I always put 94. By the way...my car is pure stock...no SC yet.:D

Then you are probably wasting alot of money. No need to run that high with stock compression. Try running 87. If it pings use 89. You should not have to go any higher than that.

My opinion is this, if you can afford it, do it! Why feed the rig ground beef when you can feed it steak?

My sentiments exactly cybrenergy. I have not doubt that lower octane/grade gas will leave deposits inside the engine that 90+ won't leave.

Matt

The Toyota V-6 is designed to run on 87 Octane. Higher Octane gas has a different burn rate and can actuall leave more deposits.
http://www.ftc.gov/bcp/conline/pubs/autos/octane.htm

Just cause you can afford more expensive gas does not mean it is better for your engine. Although that is what the gas companies want you to think.
http://www.ftc.gov/opa/1997/9706/exxon.htm

87. After having a sport car that HAD to have 91 or higher it is soooooo nice, read cheaper, to put in just regular go-go juice.

After much research & reading, I'm going to try using 87 octane for a while. I've been using 93 octane in all my vehicles for the past ten years. The money part of gasoline purchasing does not concern me whatsoever, but extending or retarding the life of my engine does. My only thought is, "If price is no concern, which octane is actually best for my engine?"

Here is the info that convinced me to try regular octane gasoline:

http://www.chemengineer.about.com/li...abyb100401.htm

More specifically these references on it:

"Gasoline Factors That Matter
The quality of gasoline and the additive package usually affect the rate of engine wear more than the octane rating. Basically what this means is that it matters more where you buy your gas than which grade you purchase. "

"All octane grades of all brands of gasoline contain engine cleaning detergent additives to protect against engine deposit build-up. In fact, using a gasoline with too high of an octane rating may cause damage to the emissions system."

"For other engines, using a fuel with a higher octane rating than the vehicle requires sends unburned fuel into the emissions system and catalytic converter. This puts unecessary stress on the emissions system. For some vehicles, a rotten egg smell coming from the tailpipe signals use of too-high octane gas. "