It should be noted that turbocharged engines such as the SAEJ1349 standard are particularly sensitive to the negative effects of lower octane fuel because it creates compressed air that a turbo exerts on an engine. I`m going to buy a 2015 Mustang GT and the car needs 93 octane fuel. I live in AZ and there is no octane 93, only 91 octane. Will the car be damaged if I use a 91 octane number? Is there another replenishment method I can use? Thank you. In short, simple, amateur terms; An octane number is a measure of how much compression the fuel can withstand before ignition. Air and fuel are compressed into the cylinder and ignited by a spark that pushes the cylinder down – which moves the crankshaft – which powers your Mustang. Since many high-performance cars use a high compression ratio in their engines, the high octane rating is required to achieve the technical result. Using a low-octane fuel in a vehicle that requires a high-octane fuel can lead to a loss of power and, in some cases, damage to the engine. Even the Ecoboost runs at 87 octanes; the coyote certainly too.
They used 93 in their specifications to produce the most power, but it`s not necessary and won`t hurt if 87-91 works. The added materials are typically used to increase the octane number of the fuel in an engine. In some vehicles, they are also used to reduce engine corrosion or simply as a lubricant for the engine. High-performance cars like the Mustang need high-octane fuels to produce the kind of power you`d expect, and their rated power is often obtained with 93-octane fuel. The story gets a little more confusing because 93-octane fuel isn`t available everywhere in the United States. So what`s the matter? Is 93 octane necessary to get the most power? MMT (Methylcyclopentadienyl Manganese Tricarbonyl) is a gasoline enhancer that can be used in certain amounts in the United States. MMT is allowed in U.S. gasoline at a level equivalent to 1/32 gram per gallon of manganese. Alfon Chemicals first produced MMT. It is considered an octane-increasing additive, but if used in non-recommended vehicles, it could affect the emission control system.
Using the example of the 5.0-liter Coyote in modern Mustangs, this rugged engine is factory rated at 460 horsepower, but Ford notes that this is achieved with 91-octane fuel based on the SAEJ1349 standard. So if you use a lower octane in this power-oriented engine, it will undoubtedly result in lower power ratings. This is not due to the gas itself, but to the fact that the Mustang`s ignition system delays the spark to compensate for the lower detonation or lower ignition point. In the end, the only thing you have more at the end of the day is a few more dollars in your pocket of the money you`ve saved thanks to the cheaper 87 octane. Actual power output with lower octane fuel is difficult to lock, but most studies show a 2% reduction for naturally aspirated engines. If you use an EcoBoost Mustang (310 hp at 93 octane), the story gets a little darker. In 2015, Ford ran into PR issues by misquoting the performance of the EcoBoost Mustang. Here, the EcoBoost has reached 310 hp at 93 octane, which is not available in some markets. At 87 octane, this resulted in a huge drop in performance up to 275. So, if you use an EcoBoost, it is certainly better to run the right things, otherwise you will suffer serious power losses. A lower octane fuel will not damage an engine. This was the case a long time ago, before knock sensors were a thing, but now the only downside is the loss of power.
This section covers all engines and their octane rating required for all generations after 1994. To make things easier, we have gathered all the data in tables. So take a look at it, and you`ll find your exact model. You`ve undoubtedly heard the term «high octane,» and when you do, you probably think of some kind of extreme sport where your heart pumps and your pulse gets carried away. Using the recommended gasoline with a recommended octane rating is essential for the excellent health of your vehicle`s engine. Using fuel with a lower octane rating will cause shocks in your engine, which can damage your engine. Ford Mustang prohibits the use of these aftermarket additives. Instead, it is recommended to use TOP TIER gasoline instead, which was introduced in 2004. Gasoline sold by TOP TIER dealers has no harmful side effects on your exhaust gas cleaning system or fuel tank. According to the post-2017 user manual of the Ford Mustang, it is recommended to use Top Tier gasoline for optimal performance (the first models can also count on the use of Top Tier without caution).
Most Ford Mustangs produced since 1994 use unleaded regular gasoline with an octane rating of 87. However, the 5.2, 5.4 and 5.8-liter engines use premium unleaded gasoline with an octane rating of 93. When you drive to a gas station, you are presented with three levels of octane that you can put into your Mustang. Depending on your condition, these indices range from 85 to 93 octane, but generally 87 octane to 93 octane can be found at stations across the country. For maximum performance, you want to run the highest octane of 91 or 93, regardless of your state. You can run 87 if the computer retracts the timing and you lose power. It`s something like 20 or 25 horsepower if I remember correctly. Technically, yes, 93 octane can produce a little more power than lower octane fuels, but the real question here should be: Is it worth running 93 octane in your Mustang? This is where the differences in profitability compared to. The performance and purpose of your Mustang should be highlighted. When it`s time for naturally aspirated engines like the 5.0L Coyote V8, driving 87 will give you less power, but only a few percent less.
If you don`t plan on tracking your car and using it as your daily driver, those few extra ponies will probably never be noticed. However, if you`re a certain type of owner looking for the best performance, or if you have a melody dedicated to the 91+ octane, go for the 93 octane (or whatever is higher in your area). The short answer is, yes, but don`t worry, we`re going to explain everything you need to know about the often misunderstood world of 93 octane and pump gasoline. Use the right type of fuel with the right octane, but if you still notice a dull knocking noise, it`s not something to worry about as it will disappear after a few miles. If you still hear the sound of hitting or hitting after using the right octane gasoline, contact an expert immediately, as this can lead to irreparable damage. Yes, the term «high octane» applies to everything from super caffeinated coffee to ultra-strong liquor, which is better used as a thinner dye than as a beverage. If you`re a gearbox like the Steeda team, there`s no doubt you subscribe to the «high octane» lifestyle, but do you put high-octane fuel in your Mustang? Thus, 93 octane has a higher compressive denotation resistance than 87-octane fuel. So what? At this point, we are only at the tip of the iceberg.
In the following sections, we will discuss in detail what gasoline should and should not be used in your Ford Mustang, the reason for the knock after filling, and the tank sizes of the different versions of each generation. Read on! You use a different scoring system than we do, hence the discrepancy.