We have 91 straight unleaded as well as 95 and 98 but the price difference can be substantial. So, for example, if you use 95 or 98 in an engine designed for 91, that’s OK. You would end up running lean. Sticker rates this turbo engine at 24mpgs combined. You will notice a little more get up and go with the car via improved throttle response as the car will feel a little sharper. I only use 91 from top tier gas stations (Shell, Chevron, etc. my question is what yr bodys will be a direct fit on my 96 frame. If heavy knocking is heard when using gasoline rated at 91 octane or higher, the engine needs. 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. I've put a tank of 89 octane in my air-cooled Ducati Monster that's tuned for 93 octane while on a road trip on a day where it was over. The answer is yes and no if you need to put 91 octane petrol in your 95 octane vehicle. You also can’t put a “use XX octane for YY:1 compression ratios” since there are many other factors involved and a static compression ratio doesn’t dictate a given cylinder. I've got a 1995 transmission out of 3500. Vectra C / Signum Troubleshooting. Otherwise, I'm 91/93 octane year round. For example, if you have a. The chemical will damage a wood finish. While filling up with Premium might sound like a way to pamper your car, there’s really no. For some cars (engines) 98 is much better on both counts. One needs to check it with the car manual to see what petrol variant is suitable for it. This is not true for modern gasoline engines. Spread the love. Transmission swaps. "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+). Anyone putting 91 in a car that requires 87 is wasting money. Although it might sound that the higher the octane level, the better it is for your vehicle, which might provide you additional benefits like reducing tailpipe emissions, improving fuel economy. Standard unleaded petrol is 91. For plenty of petrol cars, this minimum rating is 91 RON, but increasingly, modern cars require a minimum of 95-octane fuel, particularly if they feature a turbocharged engine. What size engine can I put in my 91 Chevy Caprice Classic?. r/MINI. Using 91 in an engine designed for 95 or 98 is potentially destructive. Thats it. VIDEO: How To Check And Fill Coolant. I can get 98 or 104 at Road America. I've got a 1995 transmission out of 3500. Simply put, it is vital you use the fuel recommended by your car manufacturer. Some countries even go further by providing E10 or E85 ethanol-based fuels, which are derived from sugarcane and are cheaper than 91. It is not gasoline. 2) You are pushing extra timing to reap the benefits of E85 so it would be very dangerous to run just 93 on a E85 tune. 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. Lower profile sizes tend to have lower load ratings compared to higher profile ones. Fill up with 91, then when it is half empty fill with the 85. #2 · Jan 27, 2020. 8672 posts · Joined 2010. Types of Petrol in New Zealand: Understanding 91-, 95- and 98-octane Ratings. However, avoid using a lower octane fuel than the minimum recommended by the manufacturer. With flex-fuel, there are fewer toxic fumes being pumped into the environment. Thank the Chevrolet gods for interchangeability. **". I don’t fill up with 91 even though my car can use it. Our information shows this vehicle is designed to run on 91 octane fuel. For example, if you have a car that takes 91, then mixing with 95 is fine, but not the other way round. Sure, there are some performance trade-offs, but if the article is to be believed, they are very minor. Typically your car will display symptoms such as ‘pinking’ (a noise from the engine), exhaust smoke and a loss of power. 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. The Interstate 91 highway (I-91) covers 290 miles and runs from. BMW recommends AKI 89. 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. Not - Answered by a verified AU Auto Mechanicwhat manual transmissions are compatible with a 91 1500, 350 pickup 8 Answers. E85 is over 100 per cent RON. It is an affordable option for a high-octane fuel. You could add ethanol or E85, but there's a chance the 87 you get is already 85 bumped up to 87 with 10% ETOH. It’s short for Research Octane Number,. Porsche recommends premium across the board. Birchcrossing. Unless, of course, the manufacturer specifically requires you to use a minimum octane rating, such as 95 or 98, as in the case of many performance cars, or for brands like Toyota or Volkswagen which can’t be arsed spending the money to de-tune some of their engines to accept our 91 RON cat urine. Compression is the factor,Over 10 to 1 yes it will need higher octane to be happy when screaming down the road. Still, if the car requires premium, that’s what you should buy to keep the engine in peak tune. The amount of extra power from tuning on 93 is not worth the trade off you would get instead of tuning on 91 and having a nice safety margin. 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. _____ 370z OG. Better for Environment. When I pulled the F-150 into a suburban gas station with the tank near empty, the options were 87 octane at $4. The mileage is noticeable better than 91 as. You should see about down tuning to 91 for now until all that fuel is gone. We put together a plan to make 400+ hp and 400 ft. ”. Save Share. I just wonder if your 91 is our 95 and your 93 is our 98. I get about 4 mpg less on average if I use gasohol. By Jeff Smith March 07, 2017. So when you ask it to work harder on lower octane, you risk detonation happening which can damage the engine permanently. Midgrade falls somewhere in the middle, often 89. Premium fuel is not recommended or needed. 14-06-2015, 10:58 PM. A major element to that efficiency is using the right kind of fuel. Although regarding this situation in the Predator instruction manual it says if you notice any detonation/pinging to retard spark timing. If your car requires 95 or 98, E10 is not a viable fuel for it. The octane ratings of petrol available elsewhere may differ. It is composed of 85% ethanol and 15% gasoline. 2. I-95 in . Following a contretemps with a JCB which 'closed the door' when I attempted to overtake,forcing me off the road and. Without question, Ford’s 5. You could damage the engine using 91. The ACCC said the average price difference between E10 and 91 was just 0. Is it stock. The majority of Honda Civics run on regular gas, but 91 octane is the best option when it comes to performance. Springfield, MA. “If your car’s engine is a 1. Remember you are pushing about 1/3 extra fuel to make E85 work. I only ever put regular on mine one time by accident during a road trip because the buttons were flipped lol. Put simply, the only difference between these two fuels is their Research Octane Number, with the higher-octane 95 unleaded designed to be more fuel efficient and lead to a smoother engine operation. You can check the tyre speed rating on the sidewall of a car. This can cause engine damage and result in a loss of acceleration. The best way to go about doing this will be to use the factory components from the carbureted years of Mustangs. After siphoning out as much premium fuel as possible, fill your gas tank with regular gasoline. This is the amount of compression that the fuel can sustain before igniting. E85 is a fuel designed for “flex-fuel vehicles. In the process, the more highly tuned engine. I have a panic attack every time my girlfriend drives my car. Reply Like. However both Shell and BP produce fuel at 102 RON for cars with hi-performance engines, and the supermarket chain Tesco began in 2006 to sell super unleaded petrol. Some engines can benefit a bit from a higher octane number, but really only if you rev high and. No, 99% of turbo cars need premium fuel to perform as designed. Sep 29, 2000 70,150 5 0. Meanwhile, the ‘W’ indicates the tire’s speed rating, allowing it. Is it modifed? V8 V6 turbo 4 ? If it can take e10 than chances are 91 is better. Posts: 203. #20 · May 19, 2016. That’s the difference between all octane ratings at the pump actually; 87, 89, 91, 93, 95, and so on. However, it is important to remember that the right fuel, in this case 91+ octane fuel, has some excellent benefits for. 50 per tank extra for the 95. “Use premium unleaded gasoline with a posted octane rating of 91 or higher. In parts Europe you can occasionally find 100 octane but not UK. It won’t hurt your engine if you use a higher octane fuel. Stepping up to 98 in these instances will not cause your car any harm, and while the higher knock. Generally, here’s what you need to know about octane gas types: Regular fuel is 87 octane. Our traffic management center keeps a close eye on the Express Lanes and dispatches help within minutes. Most cars built after 2000 are compatible with E10. 77 versus $1. So, for example, if you use 95 or 98 in an engine designed for 91, that’s OK. To understand what octane means, we first have to look at the concept of. Putting a lower octane fuel in your car is a no-no (see above), but fear not, as it won’t instantaneously kill your car. Naturally then, the Ford hauls ass as effortlessly as it. I would suggest you use only Premium Unleaded fuel of 91. In fact, this is what many gas stations do in order to offer their mid-grade product. The ethanol-blended e10 (a mixture of up to 10% ethanol in petrol) is a substitute for 91 in most cars. In the old days, engines could not. (Load Index: 91 (1356 lbs per tire) Speed Rating H: Top speed 130 MPH. #3 · Jan 9, 2011. The pump does this when dispensing 91. Ultimately, if you can't swing 91 octane on the regular, you probably. I'd rather put in 93 and know that I'm getting the most out of my car. you can put a higher RON fuel into your car, for. octane itself doesn't change gas mileage but ethanol added to low and mid octane fuels can lower your mileage. The OE tire is rated 91H. If the car is designed to use 91, you won’t harm it by mixing in some higher octane fuel, but you’ll get no benefit at all. 0L engine with the sale. Posts: 130. The long answer, of course, is the same as my answer for most motorcycle. Premium is 91 or 93. my truck is reg cab long bed. I have a 91 4x4 chevy 1500 step side with a 350ci. Yep putting higher octane does not harm the car. The RACQ’s spokesperson said E10 has a 3% lower energy content than 91, so you may find that you. It’s short for Research Octane Number, a measure of the petrol’s octane rating. The higher the octane, the more aromatics. My 2010 model motorcycle is specced for 95+ but when riding around Australia I came across a few lone petrol stations a couple of hundred kms from the next one where 91 was the only option. I put 93 in because the price difference only comes out to be $3-$5 per tank and I prefer the higher octane for the turbo, but I know the price difference can be quite substantial in some places of the country. From what i know, it’s pretty terrible for your car to run 91 when you’re tuned for 93. Not drastically so but there's a difference, it's not zero. -- Life is a journey made more exciting with a. It's (sometimes) better to have a couple different octane boosters mixed together, in other words, than to rely on just one. Some distributors have other blends, such as e3 (3% ethanol). They do so little to help the car that it borders on snake oil. So your engine might be doing a particular job on 91 RON fuel - punting you down the freeway at 100 kays an hour, or something. Table of Contents show. Question type: Maintenance & Repair. What car is it. Car is too new to make a difference in my opinion. You may just not a difference a little less cash in your wallet. Anything lower and you risk engine damage as a result of pre-ignition. By blending pump premium (or 91 if you like) with E85, you can create a custom blend of high-octane fuel. The WRX, WRX STI and BRZ also have decals inside the fuel lid spelling out fuel requirements. Koutsaenko says, “Drivers risk. 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. “Just. If the cause of your check engine light is octane related, the booster will fix the problem after about 20 miles of. Nov 28th, 2018. There are also two ethanol-based fuels – E10 and E85 – which are more environmentally friendly options. Blending ethanol with pump gasoline operates much differently. The load-rating is essentially the maximum weight the tyre can carry. I pulled the spark plugs and could tell the previous owner used cheap low grade gas. 1. The biggest difference between the 1500 & the 2500 is the price. Standard unleaded petrol is 91. The handbook will clearly say that. Putting a higher octane, such as 93, is not necessary but it might slightly increase the power output of the engine. StageLeft No Lifer. So, unless you have an older vehicle with a carbureted engine, you should use the manufacturer-recommended fuel for your vehicle, even where 85 octane fuel is available. 95 premium unleaded, E10 and standard 91 unleaded have a lower knock resistance. then look at the fuel economy of cars in the class. I always use 91 Octane Unleaded fuel in mine. There's no problem filling your 91 car with 95 or 98. A 91H tire is rated for speeds up to 130 mph (or 210 km/h), while a 91W tire has a higher speed rating, allowing for speeds up to 168 mph (or 270 km/h). If you put 91 (or 93 in some states) it will ignite in the combustion chamber at a less-opportune time in the stroke. 1-2k), don't floor the accelerator. In Australia, the octane ratings top out at 98 for premium unleaded, before stepping down to 95 premium unleaded, E10 (94 octane) and standard 91 octane unleaded. Just because 91 is cheaper at the pump doesn’t make it cheaper to use. “midgrade” is 89 octane and over 91. 2L engines. Just fill upthe tank with 98 octane fuel and keep topping up the fuel with 98. This can cause engine damage and result in a loss of acceleration.