Which Gas Grade do you fill in?

[halfgeek]

Hi all,
After help with ppl here, I got 2007 toyota corolla sports trim last month.

I've been filling 87 lowest grade gas into it.
Milleage is like 24 in City, 32 on complete highways.

Should i start filling midgrade or high grade to get good results. In long term, does it really help the car? then my pocket

Please give me ur thoughts

[momof1in150]

No, unless your car engine is knocking then the grade you are using is fine.

I have to use 93 Octane in my car but most cars are fine with the 87 Octane. You aren't going to do anything for your mileage, just hurt your wallet.

[halfgeek]

Thanks a lot!!!

I found this tooo

The Low-Down on High Octane Gasoline

Only if engine knocks! should go for higher octane.

So now, Will the gas from different gas stations be different? Like Mobil, Shell, Citgo ...are they alll the same or ?

[Coleroo]

Hi all,
After help with ppl here, I got 2007 toyota corolla sports trim last month.

I've been filling 87 lowest grade gas into it.
Milleage is like 24 in City, 32 on complete highways.

Should i start filling midgrade or high grade to get good results. In long term, does it really help the car? then my pocket

Please give me ur thoughts

I bought a new suv in 2004 and my hubby has a new 2006 sedan... i went through months when i first got my SUV of putting the high grade (93, i think?) in there until i read up on it and the manufacturer book actually suggests the lower grade. I've never noticed any difference in performance in either mine or hubby's car.

[tinapbeana]

I have an '05 Ford Focus, and it specifically specifies 87 octane in the owner's manual. Ergo, that's what I use.

For what it's worth, I tend to get better gas mileage on BP gas. DH's work truck is an '07 Ford, and it actually has a sticker on the gas cap saying Ford recommends BP gas... Weird, and your mileage may vary (literally).

[Aleta]

You should always go by your manual. Check with your dealer if your car starts knocking. I used to have an older Volvo and my mechanic told me to put Premium in after 3 fill-ups because it helped the fuel injectors.

I find the best mileage is with the cheapest gas I can gind. Tee Hee!

[disneysteve]

You should always go by your manual.

Absolutely. I think something like 95% of cars on the road should use regular, 87 octane. So many people put in a higher grade which is basically like throwing cash out the window because it accomplishes absolutely nothing.

[autoxer]

... my mechanic told me to put Premium in after 3 fill-ups because it helped the fuel injectors.

fyi, the Federal Trade Commission doesn't agree with your mechanic. This is from the link that halfgeek posted.

Will higher octane gasoline clean your engine better?

As a rule, high octane gasoline does not outperform regular octane in preventing engine deposits from forming, in removing them, or in cleaning your car's engine. In fact, the U.S. Environmental Protection Agency requires that all octane grades of all brands of gasoline contain engine cleaning detergent additives to protect against the build-up of harmful levels of engine deposits during the expected life of your car.

[poundwise]

Marketing is a powerful thing.

I use regular/87 as per both of my owner's manuals and my own common sense.

[momof1in150]

Unfortunately my manual says "92 Octane or better".

[Ima saver]

My manual said I could use regular gas in the vette. However, I could hear a pinging noise, so I switched to premium and the noise went away.

[Fern]

Getting back to your Corolla, i think you should be getting much better mileage than that. Are you sure that's correct? Should be getting at least 35 mpg, no?

[tinapbeana]

ditto what fern says, a corolla typically gets better mileage than that. have you checked the air filter? that is a frequent culprit of poor gas mileage. also, check the pressure in your tires: low pressure negatively affects mileage.

[Hedy]

I drive a econobox...anything other than 87 would confuse it.

[project15]

ditto what fern says, a corolla typically gets better mileage than that. have you checked the air filter? that is a frequent culprit of poor gas mileage. also, check the pressure in your tires: low pressure negatively affects mileage.

I don't think an air filter should be bad on a 2007.

MSN Autos shows that the rated MPG for the 07 Corolla S is 30/38, so I would say that the OP should stop thinking that the "S" means sports car and let off the gas a little bit.

2007 Toyota Corolla - Features & Specs - Engines & Performance - MSN Autos