It depends on the car, it's been shown the Mustang GT can make more HP on 93 than 91, but the West coast doesn't have 93 expect a few places, so many cars just say 91. Birchcrossing. 0L Coyote is one of the most impressive American V8 engines ever produced. September 17, 2023 06:12. 91 or higher octane petrol (95 and 98)Many tire speed rating charts also list the “Z” rating as anything over 149 mph. A car that takes 95, can only mix with fuels that are higher like 98. You run 91 octane w/the 91 tune and 93 with the 93 tune. This is the amount of compression that the fuel can sustain before igniting. The timing is advanced for higher octane fuel. The higher the RON figure, the more the fuel will resist knocking. 3 Fuel Options at the Gas Pump. Most drivers believe that 98 petrol is more expensive than 95 petrol because it's higher quality and better for your car. If you open the fuel flap of your car and it says “unleaded petrol only” it means 91 octane fuel is okay to use. All 2001-2005 Honda Civics, including the Civic Si’s, use 86 octane or higher. If the opposite happens and you fill your regular gas-car with diesel, the damage may not be as bad. This will help to prevent any damage to your car’s engine. If heavy knocking is heard when using gasoline rated at 91 octane or higher, the engine needs. Remember you are pushing about 1/3 extra fuel to make E85 work. There is an additive you can get that will raise the octane level if you accidentally put in 91 but I dont know it's name. It is a close split for the remaining drivers between midgrade (87) and premium (91). 91 may be cheaper at the pump to fill however, you may get more distance per tank (better efficiency) on 95. 94 wouldn't be ideal, but you DEFINITELY don't want to use worse. With 91 not restriccions at all. You should see about down tuning to 91 for now until all that fuel is gone. To put a ’95 4L60E into a ’96 car: The ’96 tailshaft housing and VSS must be installed on the ’95 4L60E before the trans can be bolted into the car. The reason for this is that many European vehicles require 95 RON or higher fuel – as that is considered their regular unleaded. 91 and 95 can be 3 or 4 difference (meaning 91 may actually be 95, or may actually be 87. However, you would not want to do this without tuning. 87 octane is usually about 8 cents a gallon higher. I only use 91 from top tier gas stations (Shell, Chevron, etc. . You could get knock, depending on how aggressive your timing is which could result in misfire, or even a blown engine. put premium gas, 91 octane or higher. The reason you feel more "power" with 91 vs 87 is because the car needs to pull more timing to avoid detonation on 87 octane. And if the fuel flap tells you to use 98, you use 98. . Even so, the Owner’s Manual says that if this grade of fuel isn’t available in your area, 91 octane is acceptable. The greater the value, the greater the compression. For example, if you use 95 or 98 in an engine designed for 91, that’s fine. From what i know, it’s pretty terrible for your car to run 91 when you’re tuned for 93. There’s a minimum concentration requirement for detergents, and about 50 percent of retailers only put in the minimum. If heavy knocking is heard when using gasoline rated at 91 octane or higher, the engine needs service. I worked at a BP subsidiary for a while and Ultimate 98 is the only one of their fuels that they guarantee to come out of the pump at the advertised octane. But if your car is designed to take premium petrol, and it is fed a lower grade petrol than recommended, that’s when issues can arise. 6L or smaller, it’s unlikely that you’ll feel the difference between 93 and 95, while a 1. One bottle of 5. a. And this is what most of our cars happily drink. This is a common acronym seen everywhere from the local service station to articles and car reviews on automotive websites, including this one. Starting from a stop it made a terrible rattling noise with any more than about 1/3 throttle, but it cruised fine at 70 mph. In the our '04 Prius, I use 86. I calculate the consumption by myself (not the BC). then look at the fuel economy of cars in the class. What size engine can I put in my 91 Chevy Caprice Classic?. The OE tire for the Chevy Volt is the Michelin Energy Saver A/S passenger tire. Putting 91 Octane Into Our F-150’s Tank, in Two Parts. . I know that higher octane means less knocking and can theoretically be timed accordingly, but these days the computer does it all anyhow. Mixing 91 and 95 Load rating on the same axle. Yeah you have to use premium. Many unassuming runabouts – low-priced hatchbacks or small SUVs – will comfortably run on 91 RON petrol, provided that’s what. octane itself doesn't change gas mileage but ethanol added to low and mid octane fuels can lower your mileage. At low rpm (e. If it says “premium unleaded only” it means you need to use at least 95. Here’s the recommended fuel for some of the top-quoted car models through our car insurance comparison service: Make, model and year. Technically, the 3-2 downshift solenoid should be swapped also, but experience shows that it is not required. Honda engines are not currently certified or designed to run on E85 or any other alternative fuel. However, avoid using a lower octane fuel than the minimum recommended by the manufacturer. Can I Put 87 Octane Gas in My Car if it Requires 91? On modern vehicles, a computer, which is often referred to as the powertrain control module (PCM), monitors one or more knock sensors to detect spark knock. But you'll probably feel the torque loss a lot more (somewhere in the range of 20-30 ft-lbs). Now, if you use the "standard" car gas. Special Unleaded 91 is a 91 Research Octane Number (RON. That’s a $0. You can check the tyre speed rating on the sidewall of a car. 0L engine with the sale. 265 = cross section width of tire in. 799 and. Table of Contents show. V. An '62 Olds 394 ( 6,5 L) ; it was a second car and was going to the junk yard because of rust , so I commuted over 10. 31st Oct, 2011. What Happens If You Put Premium Gas In A Regular Car? The benefit of Premium fuel is that it allows the ECU time to optimize detonation. It’s perfectly safe to mix them in the same tank or fill up with. Feel free to put high quality 87 in it. Erm, please dont test this on. I have been assured by the salvage yard and rodder friends that the engine swap from 2. Generally a vehicle can run on either 91 or 95 octane. #7. Standard unleaded petrol is 91. You can put 95/98 in a 91 engine in but not the other way around. The engines are the same so the only real variable is the person setting the rules. I would never use fuel below 91 octane on my WRX. I mean, maybe cheaper than 15 gallons of 91 octane, but still not free. “If this is a linear difference, that would put 91 octane making 249 horsepower,” says Zachary Santner, technical specialist at Sunoco Race Fuel. Still, if the car requires premium, that’s what you should buy to keep the engine in peak tune. Thank the Chevrolet gods for interchangeability. Not drastically so but there's a difference, it's not zero. Premium gas 90-93 is completely okay to put in a standard vehicle. The 91 Express Lanes tow trucks are clearly marked with “91 Express Lanes”. e85 if vf1 (flex fuel compliant) Reply More posts you may like. I just wonder if your 91 is our 95 and your 93 is our 98. Using 91 in an engine designed for 95 or 98 is potentially destructive. “midgrade” is 89 octane and over 91. IMO, you should just pump 93. 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. The code ’95W’ holds the key to understanding the tire’s load index and speed rating. It is okay to mix fuels (except for diesel) in your car as long as the octane rating is not less than the recommended fuel you should use. The three octane-grades of petrol that you can find in New Zealand are represented by the digits 91, 95, and 98. 91, 95, 98, E10… You’re used to. With that knowledge in hand, we can now come back to those numbers — 87, 89, and 93. A car that takes 95, can only mix with fuels that are higher like 98. The same size 215/55/16 also comes in the XL version and this. The cute little 350 in the piggie will run on the 89,but with the 91 it's smoother and snaps right up when i nail it. Really hard to find 93 or 94. 21 June 2022. the SE came with 140 hp and 150 torque though. What happens if I put 91 octane in my car? “Use premium unleaded gasoline with a posted octane rating of 91 or higher. Our traffic management center keeps a close eye on the Express Lanes and dispatches help within minutes. That also excludes E10 with a RON of 94. 1990 Mercedes 560SEL with AMG parts modifications. To understand what octane means, we first have to look at the concept of. " They mean "87 to 90. Premium gas 90-93 is completely okay to put in a standard vehicle. However, it’s not acceptable to put in a lower octane fuel than the minimum recommended by the. the f22a4 is 130 hp and 144 torque. If you have a stock engine and do mostly city driving, 91 octanes will be just fine. From what I understand, if I replace seat belts with 93+ version, SRS will reset itself. Racing fuel typically has a higher octane rating. In a tough economic climate, it can be hard to condone spending extra cents on high-performance gasoline. Technically, the 3-2 downshift solenoid should be swapped also, but experience. Reply. 2 cents a litre for the June quarter 2022, based on figures from across the five largest cities in Australia. If you start putting premium 95 or 98 in your 91 unleaded car, you might even notice better performance and efficiency. #3 · Jan 9, 2011. The computer and harness from the 98 up TPI engine should be used and the radiator should be upgraded also. MTA is a membership organisation that represents all sectors of the automotive industry, and supports kiwi motorists with gift products and information, keeping New Zealanders moving safely and sustainably on. The ACCC said the average price difference between E10 and 91 was just 0. According to Fuel Express, you can put regular gas in your car or truck even if the manufacturer recommends premium. 60, based on the average fuel price for the last financial year. Someone advised me unless the fuel cover says 95 or E10, then 91 (no ethanol) is the minimum that can be used. That's generally true for most cars, but not for ours. Whilst they may have different brand names, the grades are all based on their octane rating: 91, 95 and 98. . 3 is very painless, but don't know about driveshaft issues. In some countries. (Low altitude equivalent to 87). If the owner’s manual indicates premium gas is recommended,. Use of unapproved fuels may result in damage to the engine and fuel system components, resulting in possible engine failure. Worth doing a few test tanks. Most modern cars require a minimum of 95-octane fuel, especially if they are turbocharged. Many years ago, premium gas claimed to be efficient in terms of cleaning the fuel injectors. The engine will be too advanced, when that happens the engine can be damaged. Last edited:. 12 /12. A fuel with an 87-octane rating has 87% of the efficiency of the baseline mixture. Yet most people are scared to do it and some tuners are scared to put that much in the tunes. The 89 octane gasoline is a 50-50 mix of 87 and 91 octane gasoline. As a result, putting a fuel that has a lower octane rating to what your engine is used to may cause it to knock, which can damage the. The main difference with premium is its octane rating — 91 or higher compared with 87 for regular octane. What car is it. Remove the relay from the fuse box. I know the performance will be temporarly decreased (untill i put 91) again, but not overall. 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 performance vehicle. The specific number you see listed—87, 91, 93—is determined through lab tests. . A car designed for high octane can take in lower-rated gasolines—it just won't. Why using 91+ Octane Fuel is Good for your BMW. EDIT: you can put 40% of a tank of RON 91 into RON98 before it drops below RON 95. Octane as low as 85 AKI can be used in a pinch. Porsche recommends premium across the board. I have a panic attack every time my girlfriend drives my car. The idea here is that a vehicle engineered to run on high-octane gas is likely built to a higher state of tune, so internal cleanliness is essential for proper performance. Ultimately, if you can't swing 91 octane on the regular, you probably. Gasoline with an octane rating of 85 is available in. StageLeft No Lifer. Just fill upthe tank with 98 octane fuel and keep topping up the fuel with 98. just drink yourself $. The ethanol-blended e10 (a mixture of up to 10% ethanol in petrol) is a substitute for 91 in most cars. Premium gasoline was the preferred choice for older vehicles because it helped improve performance. To put a ’95 4L60E into a ’94 car: No mechanical mods required. Golfs are mandated 95RON. As an example, for a tyre with the markings 205/55/R16/ 91V, 205 denotes the width of the tyre in millimetres, 55 denotes the tyre’s aspect ratio, which is the sidewall’s height given as a percentage of the. “Just. There are benefits to being consistent with the type of fuel you put in your car, so once you decide, try not to chop and change. k or other RON countries you wouldn't want to use less than 95. Anyone can buy whatever car they want and put whatever gas they want but, this isn't the debate. OP, The current price of unleaded in Sydney is 120. Second generation Altima’s got the same engine tweaked for more power, from 150 hp to 160 hp. I put 91 on mine and the car runs very very good, with 87 the car perform very lazzy and you can hear some valve knoking. Fusetti’s cell phone footage appears to show his car and other vehicles driving over a “dip” along I-95 as smoke billowed from under both sides of the highway. Family Handyman. 100 fuel is used on some higher performance cars, so yes, the 172 can use "car gas", but only a specific type. For example, many gas stations in the United States offer 87, 89, and 91 octane gasoline. Anyone putting 91 in a car that requires 87 is wasting money. What’s the octane rating? Indeed, your average petrol and diesel powered car, thanks to a fairly common compression ratio of, say, eight to one (8:1), is designed to tolerate lower octane fuels. s. In a high-compression ratio engine, they will produce less power and. of torque at the crank by merging great engine building technique with terrific speed parts from Summit Racing . Carbon build up like it as dunked in mud. Regular gas typically has an 87-octane rating, and the 88-90 range is considered midgrade. In the process, the more highly tuned engine. That said, if your vehicle requires.