warcity

iTrader: (1)

Shell: NOT IN ORDER:

Because they have many more locations in my area specially (Toronto). Specially in provincial Ontario routes, very convenient. Secondly due to the nitrogen in the gas, thirdly because I have felt the difference when using V power and lastly due to air miles and their touch less car wash which doesn't scratch the car unlike some "soft" cloth washes.

warcity

iTrader: (1)

I wouldn't risk it, you don't want to damage the engine in any way and risk warranty issues.

mikeh

Quote:

Supposedly, the superstore buys gas in such large quantities that it gets a volume discount for what is essentially the same product as the name-brand stuff. The Mobils and Chevrons of the world say they include costly additives and detergents that keep your engine free of deposits and make your car perform better. So what's the truth?

To find out, I paid a visit to Andrew Buczynsky, GM's fuel guru. He says that with gas, like almost everything else, you do get what you pay for. Buy cheap fuel, and you risk coating parts of your engine with thick deposits that can dramatically affect your car's performance. There are a number of possible conditions including sticky intake valves and clogged fuel injectors.

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Gasoline is gasoline whether you're in Florida or California, right? Wrong. There are different concentrations of elements like sulfur, for example, that change the chemical composition of a batch of gasoline.

Since it's not known what causes these deposits, gasoline retailers can't be penalized for selling defective fuel. So to keep the deposits from forming in the engines, you need detergents added to the fuel.

But how do you know which brands have the right kinds of detergents and additives to keep your injectors clean? Until recently, that was a tough question to answer, but in 2004, representatives from BMW, General Motors, Honda, and Toyota got together to specify what makes a good fuel.

They called their agreed-on standard "Top Tier" and published it for the various gasoline retailers to voluntarily meet. So far, eight companies currently sell gas that meets the Top Tier standard. You can read about them at Top Tier Gasoline. At some point there will also be a Top Tier logo on the pumps like the one pictured here. For a company to receive the Top Tier seal, it has to certify every grade of fuel, not just the high-octane stuff.

mikeh

By a long margin Shell seems to be the brand of choice so far. This is in line with what other forums have published as well. It also confirms my choice in fuels.

gato

I allways go to Ultramar as it seems i am the only one and use there Supreme - Octane number 91 as i only went once to Petro Canada and maybe because im no expert on the matter as i see no difference from one to the other so i stick with Ultramar .

darkdonz

i use one from the local supermarket called momentum @ 99 R.O.N

cheeba

The octane rating is a measurement of the fuel's resistance to detonation; the higher the rating, the less likely it is to detonate due to compression and heat. I highly recommend not running lower octane-rated fuel than specified for your car. Your car does have knock sensors and should retard the timing if it starts detonating - reducing power and fuel economy in the process - but detonation can destroy engines.


Many fuels are processed at the same facilities, and only differ in their additive packages. This is usually a regional thing, and different regions will have different fuels processed at the same facilities. Also, different facilities use different processing units, so a batch from Esso, or wherever, will be different in Vancouver than it is in Regina. Furthermore, base stocks can vary quite a bit in their content, so one batch of fuel from Shell, or wherever, can be different from another batch, even given the same processing facility.

FYI, I use Husky/Mohawk 94, but only because I need it due to my tune and how I set my timing. Ethanol definitely reduces fuel economy due to its lower BTU/volume unit of fuel, but it is capable of making more power if you tune for it accordingly.

caduddin

I'm shell as well, convenient to work so I fill up on the way home, and yes for airmiles

mikeh

Well I am going to close this poll with the following independent results.

Petro-Canada 10.00%
Esso 6.67%
Shell 43.33%
Sunoco 13.33%
Other 16.67%
I don't care, they all sell the same gas. 10.00%

ARM

I use Costco fuel and have done so for almost a year (in my van which uses 89), the premium fuel (91) does not have a "contains ethanol" sticker - regular fuel does. I find generally find the Costco fuel prices .04 to .05 less than other stations, and I collect Air Miles.


I've only just purchased the TT but it runs smooth (premium 91), and mileage is slightly better than the specs. for highway.

cheers,
AR