91 is the highest octane. Standard unleaded petrol is 91. My car isn't tuned yet but I do plan on tuning it later this year and wanted to ask this first. In the process, the more highly tuned engine. Premium gas 90-93 is completely okay to put in a standard vehicle. The vehicle will perform better on 95. Without a booking, vehicles are loaded in order of arrival at the terminal on the next. To understand what octane means, we first have to look at the concept of. 8672 posts · Joined 2010. Regular gas typically has an 87-octane rating, and the 88-90 range is considered midgrade. Different grades of petrol If a certain grade of petrol is specified for your vehicle i. However, a car built for Regular fuel doesn’t generate enough pressure or heat for early ignition to be an issue. September 17, 2023 06:12. For 2001-2005 Honda Civics, including the 2002-2003 Honda Civic Si, Honda’s pretty clear. ”. Gas Math: When mixing fuels, a weighted average will get you fairly close, Santner explains. Second generation Altima’s got the same engine tweaked for more power, from 150 hp to 160 hp. Not drastically so but there's a difference, it's not zero. Which cars can I use 95 RON in?. For example, if you use 95 or 98 in an engine designed for 91, that’s fine. Anyone can buy whatever car they want and put whatever gas they want but, this isn't the debate. For example, if you have a car that takes 91, then mixing with 95 is fine, but not the other way round. In this article, we compare 95 and 98 grade petrol to find out if you're wasting money on premium petrol. 91 or higher octane petrol (95 and 98) Holden Commodore 2011. If you have an older car that's designed for 87-octane gas and it knocks when you punch the pedal, try filling it with 89-octane fuel to see if the knock goes away. You put in 6L of 91 and 44L of 98, it'll give you a tank of about 97 RON. #2 · Jan 27, 2020. Some performance vehicles require the use of 98 RON fuel. The general rule of thumb is that older cars will happily accept anything from standard 91 unleaded all the way up to premium 98 octane petrol. Finally, we have premium, and this can range from 91-94 octane. Many years ago, premium gas claimed to be efficient in terms of cleaning the fuel injectors. 91, 95, 98, petrol, fuel, car, vehicle, service station, petrol station, diesel, which petrol to use, motorists. That said, I'd never put 87 in my car and I'm in the same. Tyres have different load ratings but generally a tyre of the same size usually are the same. This means that it may not perform as well in your car. But 88 octane is completely different than E88, i. You can also run the vehicle on 95 octane fuel if you like and it will likely give you a small increase in performance and improved fuel consumption but because of the. 5 speed tranny and wanted to know what years and types of 5 speed manual trannys are compatibleThe load index is marked on each individual tyre’s sidewall as part of the series of letters and numbers that denote its statistics. (I added the bolding for emphasis) You'll probably lose 5-8hp using 89 compared to 91. what model 1991 accord is it? there are two engines for that year, f22a1 and f22a4. rig 87 or 91 gas? It sais to put 91 gas, but would it hurt to put 87?. (He doesn't do the quotes by the way, there is a specialist team for this!). The trans will bolt in, but you'll need to add a wire to the the wiring harness for the TCC apply solenoid and then reprogram the PCM to '95 base code to make TCC lockup work. For example, if you have a car that takes 91, then mixing with 95 is fine, but not the other way round. “Use premium unleaded gasoline with a posted octane rating of 91 or higher. Apr 25, 2012. Lower profile sizes tend to have lower load ratings compared to higher profile ones. No problem with putting 95 or even 98 in a car designed for 91 – except generally you will be wasting money. BMW recommends AKI 91. Running lower octane fuel will cause issues with carbon fouling and intermittent misfires (due to buildup on the plug). If you opt for a higher octane than your manual recommends—say, 89 instead of 87—your car will be perfectly fine. The car will then enter the diagnostic mode and flash the “ check engine Light ” several times, and we should count the flashes to figure out the diagnostic codes. Models with 18 or 20 inch wheels Unleaded premium gasoline, pump octane number 91 or higher Use of a lower octane gasoline can cause occasional metallic knocking noise in the engine and will result in decreased engine performance. C4-C6 Corvette Tire Fitment Guide. ). At low rpm (e. . 91 has more sulfur than than 95 or 98. That said, to me, it's most important the brand of gas that I put. Most drivers believe that 98 petrol is more expensive than 95 petrol because it's higher quality and better for your car. 50 per tank extra for the 95. The ethanol produces less BTU's then gasoline. But only a vehicle with a. my truck is reg cab long bed. The engine can only compensate so much with knock sensors and fuel trims. Standard unleaded petrol is 91. The internal combustion engine performs better with higher octane numbers. 1-2k), don't floor the accelerator. An engine is tuned to use petrol of a certain octane, and the higher the octane number, the more compression the fuel can withstand before detonating. The BP fuel cards we used to fill company cars with were only supposed to be used with 91 or diesel, except for GT-R's where we had to use 98. 95 or 98. The fuel economy of your vehicle may also be affected. By AA Expert1049 Posts|31 December 2012 at 9:45am. Racing fuel typically has a higher octane rating. 91/e10/95/98 all fine. To put a ’95 4L60E into a ’94 car: Hard. The timing and performance of the engine in the case of an unintentional unintentional switch to regular gas will be adjusted if the car’s octane is lower. Now it is better to dyno the car and see if it makes more power with that timing than 22*s or 21*'s but either way anybody should be able to run 23*'s of timing. Regular 91 unleaded is 91 per cent octane and premium 95 unleaded is 95 per cent octane, for example. ”. Pros & Cons of E10My 2019 Challenger Shaker 5. Octane as low as 85 AKI can be used in a pinch. Birchcrossing. 95 has a higher octane rating than 91. Standard unleaded petrol is 91 [octane] Premium unleaded is both 95 and 98 [octane] The ethanol-blended E10 (a mixture of up to 10% ethanol in petrol) is a substitute for 91 in most cars. It is not gasoline. The engines are the same so the only real variable is the person setting the rules. Besides quality, price is an important differentiator. the f22a4 is 130 hp and 144 torque. 0L engine with the sale. Hence, all Mercedes engines require a premium 91 gas. 2 to 4. It’s short for Research Octane Number, a measure of the petrol’s octane rating. I would suggest you use only Premium Unleaded fuel of 91. Generally, the premium petrol’s octane number stands at 91 or higher. Using 91 in an engine designed for 95 or 98 is potentially destructive. But if the car doesn’t require it, like my old Honda Civic, then 91 octane can be bad for it. 000 miles with regular. Honda engines are not currently certified or designed to run on E85 or any other alternative fuel. Fuels such as 95 or 98 RON (octane rating number) have a higher resistance to burn which indicates higher levels of energy available for the vehicle’s engine. In a high-compression ratio engine, they will produce less power and. In fact, the picture you posted says that your car works best with 91 octane, even though 87 octane is enough. In higher altitude areas, 85 acts like 87. 87 is the standard octane rating that most car engines are designed for. You should see about down tuning to 91 for now until all that fuel is gone. In terms of performance, you want the slower-burning fuel because the faster-burning kind can cause pre-ignition, and that can burn up your pistons in the long run. Use of 91 AKI (95 RON) fuel will not affect your. Like. And the 29c saving that 93 unleaded offers might have you wondering if you should switch fuel type. Higher octane fuel can allow the use of higher compression ratios. ok what are you smoking. Put the minimum required by your car. Whether or not that is useful depends on your vehicle’s engine and its requirements for fuel. Use of unapproved fuels may result in damage to the engine and fuel system components, resulting in possible engine failure. The two Y62's never saw a drop of 98 in their lives and they never had any issues. 799 and. The difference of cost in a fill up of 87 or 91 is between $2-$6 in most vehicles. In the process, the more highly tuned engine is a little more efficient, meaning it can make a little more power on the same volume of fuel. However, avoid using a lower octane fuel than the minimum recommended by the manufacturer. In the Rocky Mountain (high elevation) states, 85 AKI (90 RON) is the minimum octane, and 91 AKI (95 RON) is the maximum octane available in fuel. Yes. Naturally then, the Ford hauls ass as effortlessly as it. Mercedes-Benz cars require premium gas, as do most luxury. Ease it to a reasonably low percentage, like 30 or 50%, even if you're in a hurry. cut it by 30% and you should be able to make it to another pump. The best way to go about doing this will be to use the factory components from the carbureted years of Mustangs. Really hard to find 93 or 94. I get about 4 mpg less on average if I use gasohol. First, if you have only put a small amount of premium gas in your car, try diluting it with regular unleaded gasoline. In general, higher octane fuel helps improve fuel economy and. T. Stepping up to 98 in these instances will not cause your car any harm, and while the higher knock. My new VW Golf requires 95 RON fuel, which is seldom available and I must generally buy the even more expensive 98. Premium fuel is not recommended or needed. I mean, maybe cheaper than 15 gallons of 91 octane, but still not free. But with some petrol stations currently advertising a 17-cent gap between E10 and 95 RON — you'd see a huge cost benefit if you went for E10. Your car takes premium gas, put premium gas in it. StageLeft No Lifer. In some countries. 9 and 95 is 133. This is sort of the stock standard for many cars. Premium 95 is a 95 RON rated fuel; Premium 98 is a 98 RON rated fuel; E10 Unleaded is a blend of Unleaded 91 and Fuel Grade Ethanol complying with a minimum 91 RON rating. The Tercel of this era was a sturdy (if boring) transportation appliance, and the '95 was by far the cheapest new Toyota car Americans could buy. I also have no idea about how good it is to run that stuff constantly. Some distributors have other blends, such as e3 (3% ethanol). Octane 95 gasoline is more flammable and lighter than 91 gasoline. Whether or not that is useful depends on your vehicle’s engine and its requirements for fuel. Transmission swaps. Driven car home already. So there’s a short answer and a long answer to the question asked in the title of this article. I only ever put regular on mine one time by accident during a road trip because the buttons were flipped lol. Here is a complete fuel-type guide and what's best for each Subaru model, regular (87), mid-grade (89-90), premium (91. Maybe if a 95 or 98 no ethanol fuel was made available in Canada, that may boost. 91 – Recommended RON / “Control” 95 – Gets best $/km out of any fuel, noticably more perky than 91 98 – Marginally better economy than 95, costs more. Asked by Adamboy2014 Oct 09, 2016 at 11:10 AM about the 1988 Chevrolet C/K 1500 Silverado RWD. Introduced in 2011 with 412 horsepower, the “new” 5. 60, based on the average fuel price for the last financial year. Some manufacturers will insert a “Z” in the middle of the tire size description (right after the aspect ratio) when the tire is rated at “W” or “Y. Right, if you can afford a $30K+ sports car, you surely have the financial stability to not concern yourself with a couple bucks more in fuel costs. Do you have to put 91 in a BMW? BMW makes it clear that the octane rating of the fuel should be above 91, and although you don’t have to follow this recommendation, it’s wise to do so for the sake of your car’s engine. With flex-fuel, there are fewer toxic fumes being pumped into the environment. #9. The load-rating is essentially the maximum weight the tyre can carry. Conclusion: As long as it's 91 AKI, the car will run well (87 and 89 are impure for/and will hinder performance on the Turbo engine). All 2001-2005 Honda Civics, including the Civic Si’s, use 86 octane or higher. 77 versus $1. If your vehicle requires diesel fuel and you accidentally put in unleaded, the unleaded fuel will actually remove the lubrication that diesel provides for the car’s parts. The biggest difference between the 1500 & the 2500 is the price. So it is easy to notice that most Toyota engines (especially of the mass-segment) were originally designed for using Regular (in Japan) or RON 91 (in US), but for Europe the nominal octane number is always increased. 399, 89 octane at $4. Otherwise you are literally just wasting 10-25 cents a gallon depending on your gas prices where you are. Nov 28th, 2018. 91: Known as ‘Standard Unleaded’, 91 petrol is the most common type of petrol available, with most cars able to run on it, unless you have a. Folks should know and understand what happens if you put premium gas in a regular car to avoid the unexpected results and benefit the injectors. However, it is important to remember that the right fuel, in this case 91+ octane fuel, has some excellent benefits for. Save Share. My experience from running a 2005 T5 with 95 european octane (91 american) was that the car consumed a barely measurable amount of fuel more. * Race (91 - 93 octane) - The race tune will ensure the largest increase in vehicle performance. For example, putting regular unleaded 91 RON in a car designed for the higher-octane 95 RON. Which Gasoline or Fuel Should I Put in My Car? What Is Flex Fuel? Understanding Diesel Fuel; What Is Ethanol-Free Gas? Why Do Some Gasoline Types. "If your vehicle is compatible with E10 petrol, there’s no reason you can’t mix the 2 grades of petrol (E5 97+ and E10 95+). High compression engines require higher octane. It is fine to blend fuels yourself. 12)+ (98*0. VIDEO: How to Check & Fill Engine Oil. E85 is over 100 per cent RON. There are no benefits to using premium gas unless your vehicles manufacturer requires that you use high octane (premium) gas. If you’re driving a car that takes 91 unleaded and you fill up with a premium 95 or 98 fuel, don’t panic as this won’t lead to any engine damage. If you open the fuel flap of your car and it says “unleaded petrol only” it means 91 octane fuel is okay to use. A modern car has a digital engine-management system with a calibrated spark-advance profile for a certain amount of octane in the fuel. Mixing grades of gasoline will not harm your.