Can I put 88 gas in my Subaru Ascent?
No, it is not recommended to use 88 octane gasoline in a Subaru Ascent. The Subaru Ascent requires a minimum of 87 octane fuel, and the manufacturer recommends using 91 octane or higher for optimal performance and fuel efficiency.
Understanding Octane Ratings and Fuel Requirements
Octane rating is a measure of a fuel's resistance to premature ignition, also known as "knocking" or "pinging." Higher octane fuels can withstand higher compression levels before igniting, making them better suited for high-performance engines. The Subaru Ascent, like many modern vehicles, is designed to run on higher octane fuel to take advantage of its turbocharged engine and deliver maximum power and efficiency.
Using a lower octane fuel, such as 88 octane, in a vehicle that requires a higher octane can lead to engine knocking, reduced performance, and potentially even long-term damage to the engine. The Subaru Ascent's engine is tuned to run optimally on 91 octane or higher fuel, and using a lower octane can cause the engine to knock, which can lead to increased wear and tear over time.
Consequences of Using 88 Octane in a Subaru Ascent
- Reduced Performance: The Subaru Ascent's turbocharged engine is designed to take advantage of the higher octane fuel to deliver maximum power and acceleration. Using a lower octane fuel can result in a noticeable decrease in engine performance.
- Increased Fuel Consumption: The engine may need to work harder to compensate for the lower octane fuel, leading to decreased fuel efficiency and higher fuel consumption.
- Engine Damage: Prolonged use of a lower octane fuel can cause engine knocking, which can lead to increased wear and tear on engine components, potentially resulting in costly repairs down the line.
It's important to always refer to your Subaru Ascent's owner's manual for the recommended fuel requirements and octane rating. Using the correct fuel is essential for maintaining the vehicle's performance, fuel efficiency, and long-term engine health.
Why is 88 gas so cheap?
Unleaded 88 is usually noticeably cheaper than traditional gasoline because ethanol is a less expensive fuel source than crude oil. And, because up to 15% of Unleaded 88 is made of the biofuel ethanol, it uses less crude oil per gallon than traditional gasoline.
What is the best fuel for Subaru Ascent?
regular 87-octane fuel
For the majority of Subaru models, such as the Crosstrek, Forester, Outback, Legacy, and Ascent, regular 87-octane fuel is perfectly adequate. These vehicles are designed to run efficiently on regular fuel, providing a good balance of performance, fuel economy, and cost savings.
Can I mix 88 and 93 gas?
You can absolutely mix octanes, and they mix linearly. So, if you could fill half your tank with 89 and the other half with 93, you'll end up with a tank of exactly 91-octane.
Can Subaru use 88 octane gas?
General Motors recommends use of Unleaded 88 beginning with its 2012 model year vehicles and Ford recommends Unleaded 88 for its 2013 and newer vehicles. Unleaded 88 is also approved for use by Volkswagen, Audi, Toyota, Land Rover, Porsche, Jaguar, Honda, Subaru, and certain models of Mercedes-Benz and Lexus.
What is the downside of unleaded 88?
The negatives of E88 is include lower mileage, ethanol has lower energy content than gasoline.. It is not recommended for any vehicle built before 2001 because it attacks seals and gaskets, potentially causing expensive repairs. It is not recommended for vehicles used rarely, it degrades is left in the tank too long.
Can Subaru Ascent use E85?
FA24F in the Ascent requires a tune to safely/properly run e85. Safely, e15 is the highest you can go (eg: Sheetz 88 octane e15), and octane must be 87 or above for normal driving and for towing needs to be 91 or higher for 2023+.
Can I put unleaded 88 in my gas tank?
Yes, it is safe and approved for use on the vast majority of modern vehicles (2001 and newer). In fact, Unleaded 88 can boost horsepower and enhance your engine's performance.
What fuel does Subaru recommend?
87 octane
With the exception of performance vehicles, all other Subaru models are designed to run on 87 octane. Over the course of 15,000 miles per year, using regular 87 octane in a Subaru that doesn't require a higher level can save you hundreds in additional fuel costs.
What if I accidentally put E15 in my car?
E15, often sold at the pump as Unleaded 88, for its octane rating, can safely be used in all cars, trucks and SUVs from 2001 on. Those model years represent more than 90% of vehicles on U.S. roads. The ethanol industry says the fuel is one of the most tested in history and has no effect on vehicle drivability.
What happens if I use 88 instead of 87?
Vehicles that are not listed as being able to run 88-octane could see long-term engine damage including a higher likelihood of seeing fluids leaking. Engines not equipped with newer equipment to handle 88-octane could potentially overheat.
