Grades of gasoline
- What grades of gasoline are available at Petro-Canada?
Three grades of gasoline are available at our stations across Canada, and a fourth premium grade is available in selected areas:
Gasoline Grades Available at Petro-Canada
||Petro-Canada Brand Name|
||SuperClean 94 (Montreal only)|
||Ultra 94 |
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- Where can I purchase Ultra 94 fuel
Petro-Canada offers Ultra 94 at select Petro-Canada™ branded sites in Ontario and Alberta. You can search for Ultra 94 locations using our Site Locator.
- Why is Ultra 94 not available at the Petro-Canada site I use?
Availability of Ultra 94 is based on a variety of factors including distribution and local market demand. Petro-Canada currently offers Ultra 94 at over 400 sites in Ontario and Alberta.
- What are the benefits of Ultra 94 fuel? What does higher octane do for my car?
Ultra 94 offers high octane fuel at gas stations in Ontario and Alberta. Its formulation surpasses the CGSB (Canadian General Standards Board) performance requirements for super premium gasoline. Ultra 94's higher octane ensures you always get the maximum horsepower, maximum acceleration, and maximum performance from your vehicle, even under tough driving conditions.
Like all Petro-Canada fuels, Ultra 94 is Top Tier certified; in fact, it significantly exceeds Top Tier performance criteria. This higher detergency level will actually clean your car's fuel injectors and intake valves, and keep them clean. Cleaner engines help provide optimal fuel economy, reduced emissions and maximum performance year-round.
- Does Ultra 94 contain ethanol? Does Petro-Canada still offer an ethanol-free gasoline?
Ultra 94 contains ethanol. Due to the fact that various fuel grades are blended at the point of sale, most grades of Petro-Canada fuel may now contain up to 10% ethanol. This represents a change from the previous state, where premium fuel was ethanol-free at Petro-Canada.
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- Will SuperClean™ improve my fuel economy?
Your mileage may improve, but this depends on your vehicle, how dirty your engine was to begin with and a large number of other factors, such as driving habits, tire pressure, road conditions, weather, loads, etc.
- Does SuperClean have any effect on the environment?
Yes. Dirty fuel injectors and valves can contribute to higher tailpipe emissions. Using SuperClean helps to reduce those emissions.
- If SuperClean helps to clean my engine, what about PlusClean and RegularClean gasolines? Don't they clean my engine as well?
Yes. If you have been a loyal Petro-Canada purchaser, your vehicle is likely delivering its best performance. However, if you sometimes purchase lower quality gasolines, SuperClean can help remove any deposits that may have formed.
- Is it OK for old and new cars?
SuperClean is great for all new cars to help keep the engine clean and deliver peak performance. In fact, automobile manufacturers recommend the use of gasolines that contain a detergent additive. For older cars, it will help remove intake valve deposits and clean the fuel injectors to help restore their performance.
- Isn't all gasoline the same?
No. In most parts of Canada, many private and independent brands do not provide as much or any cleaning agents in their gasoline, which can leave harmful deposits in your engine. These deposits will reduce your engine's performance over time. Petro-Canada's SuperClean gasolines contain higher levels of Tactrol, our unique formulation of deposit-control additives, which can actually help remove any harmful buildup and prevent its return with regular use. (Tactrol is also available in our RegularClean (87), PlusClean (89), SuperClean 94 (Montreal only) and Ultra 94 grades of gasoline.)
- Who invented SuperClean gasoline?
Petro-Canada did. It is our own unique formulation, which we produce within our own company. No other company offers SuperClean gasoline except Petro-Canada.
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- What is WinterGas™?
WinterGas is Petro-Canada's exclusive gasoline, specifically designed to meet Canadian driving conditions head on and to help drivers handle even the roughest and harshest winters. WinterGas is specifically formulated and blended in all of our grades of gasoline, including Ultra 94, to provide extra protection by helping with cold weather starts and helping to prevent fuel line freezing, at no extra cost.
- Does WinterGas cost more?
No. WinterGas is available at no extra cost in all octane levels at Petro-Canada gas stations.
- Don't all companies sell WinterGas?
Only Petro-Canada sells WinterGas.
- Is WinterGas suitable for all vehicles?
Yes. Petro-Canada's WinterGas is specially formulated for Canadian winters, to:
- provide the same high level of quality found in our traditional gasoline
- help prevent vehicle fuel lines from freezing in colder weather
- help with cold weather starts
- be suitable for all vehicles, both new and old, carburated or fuel-injected
- Is WinterGas available in all grades of gasoline?
WinterGas is specially formulated and blended in all of our grades of gasoline, including Ultra 94.
- Is WinterGas OK for snowmobiles, chainsaws, and snowblowers, etc.?
Yes, WinterGas is suitable for all vehicles and smaller engines using gasoline and can be freely substituted for conventional gasoline. In some areas, WinterGas may contain up to 10% ethanol (E10). Please refer to your owner's manual to ensure your equipment is compatible with ethanol-blended gasoline.
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- How does Tactrol™ work?
Although it's quite a complex process, put simply, Tactrol acts as a detergent that not only prevents the buildup of harmful deposits, but also attacks deposits already formed and cleans them out of your engine. Tactrol, which contains nitrogen, is used in all of our grades of gasoline at varying levels. Our customers can choose the cleaning power they need. We have RegularClean, PlusClean, SuperClean, SuperClean 94 (Montreal area) and Ultra 94.
- How do I know that I am receiving Tactrol in your gasoline?
Petro-Canada has rigid quality control and monitoring procedures to ensure that every drop of your SuperClean or Ultra 94 has the right amount of Tactrol.
- Who invented Tactrol?
Petro-Canada did. It is our own unique formulation, which we produce within our own company. No other company uses Tactrol except Petro-Canada.
- Is Tactrol available in WinterGas?
Yes, Tactrol is available in WinterGas, Petro-Canada's gasoline specifically designed to meet Canadian driving conditions head on and to help drivers handle even the roughest and harshest Canadian winters. WinterGas is available during winter months.
- Why is Petro-Canada participating in the Top Tier Detergent Program?
Petro-Canada has shown leadership with regards to detergents in gasoline for many years and that will continue. Becoming Top Tier certified is a continuation of that leadership position.
Learn more about the Top Tier program
- Don't all gasoline retailers use Deposit Control Additives (DCA)?
Not all retailers have an effective DCA in their gasolines. In fact, we encourage gasoline retailers to add DCA to their gasoline. We will focus on providing Canadians with top-quality gasoline with our proven and tested Deposit Control Additive — Tactrol.
- Is Top Tier a significant change to Petro-Canada gasoline?
Petro-Canada has supplied Canadians with high-quality fuels that meet their driving needs for many years. This track record, and the fact that our fuels meet or exceed all Canadian standards, makes the Top Tier certification a reinforcement of our commitment to our customers.
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- What is octane?
A gasoline's octane number is a measure of its ability to resist knocking as it burns in the combustion chamber of an engine. A spark from the spark plug starts normal combustion. The flame travels across the combustion chamber rapidly and smoothly until all the fuel is consumed. Abnormal combustion occurs when part of the fuel/air mixture ignites spontaneously and burns very rapidly, causing the pressure to rise suddenly. This results in a metallic knocking or pinging sound. A gasoline's ability to resist knocking is called its anti-knock quality. The octane number of a gasoline indicates the anti-knock quality of the fuel. A gasoline's octane number is determined by comparing its resistance to knocking to the performance of reference fuels in a test engine.
- What octane does my vehicle need?
To determine your vehicle's octane requirement, look at the manufacturer's recommendation in your owner's manual. Most auto manufacturers recommend 87 octane gasoline, as measured by the (R + M) / 2 method on a test engine under defined operating conditions. If the vehicle knocks on the recommended grade, a higher octane grade should be selected. Some foreign vehicle manuals recommend a Research Octane Number (RON) instead of the more common octane rating that appears on most gasoline pumps. As a rule, the recommended octane rating can be determined by subtracting four (4) from the recommended RON number. A vehicle that calls for "91 RON" should use 87 octane gasoline (as measured by the (R + M) / 2 method). Using a higher grade than is required will not usually increase performance. However, if the vehicle is equipped with knock sensors, as many late model vehicles are, a higher octane grade may enhance performance.
- Why does my vehicle require a higher octane gasoline than is recommended in my owner's manual?
There are two reasons. First, the engine may be at the upper end of the octane requirement range for the particular model. It may, therefore, knock during periods of heavy engine load. The octane requirement for each engine in vehicles of the same make is different because of variations in manufacturing tolerances. Industry testing has shown that this difference can range between two and five octane numbers. While you will not hear knock, the spark timing will be retarded, resulting in loss of power and performance.
The second reason for using a higher-octane gasoline than recommended could be to counter the buildup of combustion chamber deposits resulting in a higher than average octane requirement for the engine. Industry testing shows that the octane requirement increase (over the initial 20-50,000 kilometres) can be as much as nine octane numbers. This means that a vehicle that was originally designed for 87 octane fuel may eventually require 91 octane fuel to perform satisfactorily.
Petro-Canada's premium gasoline, SuperClean™, contains a higher level of Tactrol™, our exclusive deposit control additive, than our other grades and will help clean up deposits left by lesser gasoline brands.
Our two super-premium grades, SuperClean 94™ (Montreal supply area) and Ultra 94™are our highest octane gasolines. They have all the attributes of SuperClean and a higher detergency level that will help clean your car’s fuel injectors and intake valves and help keep them clean. Cleaner engines help provide optimal fuel economy, reduced emissions and maximum performance.
- Why is ethanol an effective octane booster?
The octane number written on the gas pump is Anti-Knock Index (AKI). It’s an average of two octane ratings using the same test equipment but using different operating conditions. The methods produce a Research Octane number (RON) and a Motor Octane Number (MON). Both were once considered important and that’s why AKI is an average of the two. With modern engines and fuels systems, recent studies have shown that RON is more important than MON. So in these cars, the higher the RON the better these cars perform. For an AKI rating of 91 the lower the MON the higher the RON. This difference is called sensitivity. All gasoline components have different sensitivity. Most hydrocarbon components have low sensitivity. Ethanol has high sensitivity and so, modern performance cars benefit from gasolines with ethanol. Why does ethanol have higher sensitivity? One reason is related to the cooler combustion that results from ethanol combustion. Higher knock tendency is directly related to higher combustion temperature.Here is a comparison of two fuels with different octane with and without ethanol.
|91 Grade - no ethanol |
|Ultra 94 - with ethanol|
Notice the difference in RON number from 91 grade without ethanol (97.2) and the RON of Ultra 94 (101.5). The difference is 4.3 numbers. That is significantly more than the 3 numbers difference between 94 and 91 AKI labelled on the pump. That is why gasoline with ethanol can be the best performance fuel for today's cars.
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Other Gasoline Basics
How is gasoline made?
Gasoline is manufactured from crude oil through a series of physical and chemical processes in an oil refinery. The end product, a blend of several refinery streams containing hundreds of chemical compounds called hydrocarbons, must meet over 20 different requirements to be considered a suitable gasoline for use by a wide range of vehicles.
Rigorous quality control tests are conducted prior to releasing the gasoline into the market place. In some cases, additives are included to improve specific properties of the gasoline.
What does reference fuel mean?
In the measurement of octane quality of gasoline a mixture of two hydrocarbons called iso-octane and normal heptane. Iso-octane is assigned an octane rating of 100, and normal heptane is assigned an octane rating of zero. A blend of 90% iso-octane and 10% n-heptane would have an octane rating of 90 octane.
What does (R + M) / 2 stand for?
This is the Road Index — the average of Research Octane Number and Motor Octane Number; one measure of the combustion quality of gasoline.
What are hydrocarbons?
Hydrocarbons are compounds composed of carbon and hydrogen.
What does hydrocracking mean?
Hydrocracking is a severe, high temperature, high pressure refinery process that converts heavy black oil into gasoline and diesel fuel by cracking or breaking up larger molecules in the presence of hydrogen and a catalyst.
What does the hydrotreating process do?
The hydrotreating process reacts a fraction of crude oil with hydrogen at high temperature and pressure, in the presence of a catalyst, to improve colour and odour, and reduce sulphur content.
- What is the difference between on-road diesel fuel, off-road diesel fuel and low sulphur diesel fuel?
On-road diesel fuel — This refers to diesel fuel that is used for on-road purposes, or for off-road vehicles designed for on the road. This fuel has a maximum sulphur level of 15 parts per million (ppm).
Off-road diesel fuel — This refers to diesel fuel that is used for off-road purposes (i.e., mining, farming, etc.). This fuel is frequently dyed red or "marked" to show that it is exempt from provincial road taxes. This fuel has a maximum sulphur level of 15 ppm.
Low sulphur diesel fuel — This fuel contains less than 500 ppm (0.05 weight per cent) sulphur, and can only be manufactured until 2012. It may be sold to railways and for marine use.
What's the term used for lubricating moving parts?
It's called lubricity and it describes the property of diesel fuel that lubricates moving parts in fuel pumps and fuel injectors to minimize wear.
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