This is probley a stupid question but just actually though about it.

What are the differences?

And if I put unleaded plus in my xA, what would it do? Like would it better the speed, performance, last longer?

 

there are many octane discussions but to not sound like an ___ ur car is an eco box that was made for unleaded, and unleaded ischeaper, it matters more who u buy from than which octane,

 

Most vehicles are designed to run fine on 87 octane fuel. A higher octane number doesn't mean that your vehicle will perform better. It simply means that it's more resistant to engine knocking or pinging.

In short, Filling up with a higher grade is a waste of money.

 

No use to use anything higher than 87 in our vehicles. Will not help performance or gas mileage to use higher octane. Use to be able to get 101 Octane for V8's back in the day, but the engines have changed since then and gas is too expensive to pay more for no reason.

 

Per Toyota (and most everyone else knowledgable) the use of a 'top tier' gasoline of 87 octane should be everything you need in your engine - use of lesser gasolines, non 'top tier' gasolines, will usually mean that you aren't getting the required additives to prevent deposits, etc.

Any of these brands is acceptable to Toyota:

QuikTrip
Chevron
Conoco
Phillips
76
Shell
Entec Stations
MFA Oil Company
Kwik Trip/Kwik Star
The Somerset Refinery, Inc.
Chevron-Canada
Aloha Petroleum
Tri-Par Oil Company

SEE:
http://www.toptiergas.com/ and http://autorepair.about.com/od/generalinfo/a/110305.htm


(Personally I try to stick with Chevron, 'cause I like their additive package.)

Tom

 

We don't have Chevron where I live so I usually stick with Mobil or Shell, never Citgo.

 

Better off with the Shell, iyzmi. Mobile doesn't meet the spec on their lowest grade...

 

What's wrong with citgo? They are the cheapest around me.

There is also mobil, hess, and sunoco. I guess those are OK, but I don't know any of any differences!

 

Use whatever fuel you want to, but remember that Toyota recommends only using the specific fuels that have enough detergents in their 87 octane so as to prevent deposits in the engine. Choice is yours though. You can follow that list above or follow your wallet.

(What's wrong with [any brand not on the list]? Not enough detergents in their low end fuels.)

SEE THE LINKS ABOVE.

 

The higher grade fuels also have more additives. That means cleaner fuel system and longer lasting. The "minimum" is so little it's almost useless, so the more the better.

 

http://www.caranddriver.com/article....rticle_id=9752

 

What about Sunoco?

 

 

A friend just had their Element worked on at 60,000 miles. Since 30,000 miles it had been begun running rough and getting 20 mpg, off and on, getting more frequent. She blamed it on "bad gas", meaning gas that was stale or dirty, and so she went to the busiest stations, which were discount brands with the lowest prices.

She got a new Toyota truck, and was going to give the Element to her daughter out of town, but the Element ran so badly she took it to the Honda dealer. They said the valves had deposits so heavy that one valve was unable to close completely. They ran this chemical kit through the injection system and charged several hundred $$:

BG Induction System Cleaner, 3Part MI 3000plus $88.95
“BG Induction System Cleaner, 3Part MI 3000plusBG ISC Induction System Cleaner will quickly and safely clean fuel injectors and remove hard, baked-on carbon deposits from intake ports, intake valves, combustion chambers and EGR ports. For complete clean-up, BG ISC should be used in conjunction with BG MI 3000 + added to the vehicle fuel tank at time of service. BG ISC will not harm gaskets, seals, hoses or any component in the fuel system. Professional Grade Feeder System included & required."
http://carfood.com/megpowentuni.html

I have had no such problems with my Mazda using Chevron and Shell for the past ten years, and told her she should only use Top Tier gas in her new Toyota.

 

Well there isnt any of those stations in buffalo, so im **** out of luck.

 

Hmmmmmmmm... Odd situation, Mach06. I even checked with Google Earth and there isn't a one of those even CLOSE to Buffalo.

Looking at your gas price site (http://www.buffalogasprices.com/) doesn't show any, and there is just no way to assure the right blend without them being independently certified.

Possibly the better brand's better grades have adequate detergents, but that's still just a gamble.

(I've only driven to Buffalo once, and didn't happen to get fuel there.)

I guess all I can really say is "Good Luck!"

Tom

 

I only feed my egg Chevron and every 3 months use a fuel injection cleaner per advise from Toyota until the new charcoal fuel canister comes out and received. Not sure on the fuel injection cleaner though *shrugs*

Guess the tech would know best in some cases.

 

Hey, does anyone happen to know if those fuel system cleaners that you pour in your tank on a full tank of gas actually helps? I've never heard any reviews one way or another.

STP for example:
http://www.stp.com/fuel_complete.html

 

I used to use those but I stopped using them cause people say that i didn't need to use any gas treatment. I use AM/PM, are they good?

 

Not exactly. The xB engine is designed to run or 87 octane "or higher", says the manual. With a 10.5:1 compression ratio, the xB engine detunes itself to use 87 octane. You will get more power, and more mileage, from high octane. See:

-----------------------------------------
Octane vs CR
Car Bibles : The Fuel and Engine Bible
http://www.carbibles.com/fuel_engine_bible.html

... There is a direct correlation between the compression ratio of an engine and its fuel octane requirements. The following table is a rough guide to octane values per engine compression ratio for a carburettor engine without engine management. For modern fuel-injected cars with advanced engine management systems, these values are lowered by about 5 to 7 points.
CR Octane
5:1 72
6:1 81
7:1 87
8:1 92
9:1 96
10:1 100
11:1 104
12:1 108
--------------------------------------