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Post Reply Regular or Premium Gas ?
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39 / Inside your compu...
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Posted 3/29/17
I have to get premium since it's required by the G37
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18 / M / The Bay
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Posted 3/29/17
I have to get premium also, that's what's required for the Acura RSX Type-S/ Integra Type R
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20 / M / Europe
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Posted 3/30/17 , edited 3/30/17
Hahah, the cheapest gas I can get is 95 and for a few more cents I can get 98. Get that premium for sure.
Posted 3/30/17
I tend to get premium/supreme since the owner's manual states to use it. In cars that state that it's okay to use regular, why not?
Posted 3/30/17
Free gas LoL
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28 / M
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Posted 3/30/17
Mercedes, so premium :/
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Posted 3/30/17
I would just get whatever is cheaper. Only 12% of the gas you put in your car is used to move you forward. The rest is lost from heat and inefficiency.
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Posted 3/30/17
I have a full size truck >.< When i put regular in the tank i get 9mpg in the city/13 highway, when i put premium in the tank i get 14mpg in the city/ 20mpg highway. My owner manual says to use regular.....

I would say try it for your vehicle and see. Adding a full tank of premium will only cost you like 4$ more at the pump and can really help your car out, even a little bit on knocking in your engine will cause your ecm to add more fuel while your drive.

ps. not a mechanic but i used to race
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22 / M / CA, USA
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Posted 3/30/17
Nice car = premium

If it's not meant to go fast etc you don't really need it but if you want I do think it's always going to be better for the car. It has more octane in it so it burns more efficiently it's not going to be super noticable I don't think but it's one of those long term things. My dad has a BMW and uses it now (he gets like 36-37) mph on road trips probs 40+ if he could just get on to a highway and never have to break or go up a hill. Most of that is the car but some of it is the fuel.
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28 / M
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Posted 3/30/17
Aww, that's cute, what you guys call premium your side of the pond we call regular over here.

That being said it depends on the car I'm using as to what I fill up with, I use UK regular in my old '87 Ford Capri with a little bit of lead additive added after, unless I'm near a certain part of the country then I can actually fill up with old school "4 Star Leaded".

My Mondeo ST on the other hand gets filled up with 99 Octane premium with no extra faffing about needed.
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Posted 4/7/17 , edited 4/7/17

namealreadytaken wrote:


"The long-term use of regular-grade gasoline can lead to engine damage"

i lol how they try to cover that portion as soon as they noticed it...


using regular over premium will supposedly save you almost 300 bucks, while repairing a damaged engine can cost between $2200 - $4000 or 10% of what you paid for the car. honestly, if you can't afford premium gas, you probably shouldn't buy a premium (luxury brand) car in the first place.



it's true.. if you car requires premium and you are using regular instead.. it will cause problems down the road.. b

if you can can use regular gas.. using premium is a waste of money



kevz_210 wrote:

Regular, unless you have a luxury or a sports car it's a waste of money to use anything with higher than 87 octane.
Like everyone else says ultimately follow the manual.


i think FIAT cars require premium gas... probably due to compression ratio like the user below mentioned


MadBovine wrote:

As an auto mechanic with 12 years of experience I can say this, the octane rating your engine needs is dependant on the compression of the engine, running higher octane fuel than is needed is simply a waste of money.

TL:DR Use what your owner's manual says.





bemused_Bohemian wrote:

Regular, unless I'm in Colorado high country...........do stay away from that E-85 shit. It's as bad as running water in a gasoline engine.


honestly i don't know which car can use E-85.. since my new car has the warning section for E-85




just got my car and driver magazine and saw this

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27 / F / Overlord's Castle
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Posted 4/7/17 , edited 4/7/17
Can anyone confirm that you get better mileage based on oil quality?

i might be imagining it but I felt like my gas lasted longer when I was using a higher octane.
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27 / M / United States
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Posted 4/7/17 , edited 4/7/17

Art-chan wrote:

Go by the owner's manual. Mine says cheap stuff is fine, so that's what I use.


Same here. The premium stuff adds up fast. I wish it didn't, though.
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29 / M / B.C, Canada
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Posted 4/7/17
Premium, since I did the same thing all EVO 8 drivers do and tuned the thing to hell and back. The increased octane is mandatory at this point.
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32 / M / Behind You With A...
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Posted 4/7/17
premium...
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