In short, there’s none; you should use what the manufacturer has specified for your vehicle. If you don’t know what fuel you should be running your vehicle on, seek advice from the local dealer that services your brand of car. To achieve that, the engine uses very high temperatures and pressures. Be the first to rate this post. "My advice would be to run one octane or the other," says Stephen Leroux, professor in the school of transportation at Centennial College in Toronto. Some information in it may no longer be current. That means: Comments that violate our community guidelines will be removed.
If you want to be on the safe side, 98 petrol will offer your engine better protection. “Today, almost nobody in Switzerland needs unleaded 98 anymore. This is a space where subscribers can engage with each other and Globe staff. So that unleaded 95 also keeps what it promises, the octane number of the fuel is guaranteed by means of an international test procedure (ROZ; research octane number). The reason for this is often a too low knock resistance of the petrol, which is classified in the value of the octane number.
Only cars that are older than 17 years or have trimmed engines need to fill up with 98 unleaded fuel,” explains Daniel Hofer, company manager at Migrol ktip. But in order for a high-power engine to function, it will need premium petrol which can withstand pressure and temperature. Unleaded 95 or 98? Download the new Motorist app now.
About the only time you might need to switch to petrol with a higher octane level is if your car engine knocks (sometimes called pinking) when using the recommended petrol. However, check your vehicle owner's manual to see what octane rating your engine requires and stick with that. In the past, lead additives were used for this purpose, but they are now prohibited due to their environmentally harmful properties. I will stick to 91 for my car. So in this aspect, premium petrol will not give you greater power, because power is dependent on the engine. Car companies, some experts and Consumer Reports itself say you should use what the manual recommends – the site notes that Bartlett's view is personal. Auf Carhelper kannst du deinen nächsten Autoservice oder Reparatur kostenlos online buchen.
Since unleaded 95 burns faster than unleaded 98, 95 is required for low compression ratios and, vice versa, 98 is required for high compression ratios or high filling levels. "Try running 87," he says. Is super unleaded worth paying for? "Remember, this 'premium' recommendation is not coming from your mother, but rather an auto maker looking for marketing-friendly bragging rights," says Consumer Reports deputy online editor Jeff Bartlett in a blog on the magazine's site. 24-hour AA Roadservice: 0800 500 222 98 petrol, which is more stable and resistant to 'knocking', is a better choice when it comes to engine protection. 98 does have a slight edge over 95, but perhaps not enough to justify the higher price. Why do you need to change the oil at all?
However, while it’s possible to mix these fuels, experts recommend sticking to the octane recommended for your car, whether 95 or 97/98, to ensure efficient performance and avoid engine damage.
No real help to your car or wallet, says one car expert. Reduce air conditioning and other consumers to a minimum. This is probably because high-performance engines usually require 98 petrol. The mixing ratio is then adjusted until the fuel mixture has the same knock resistance as the fuel sample. Today, the isomerisation process is used to increase the knock resistance of the fuel. If the fuel flap tells you to use 98, that’s what you need to do. In terms of mileage, 95 and 98 petrol are more or less on par, and although 98 is a little bit better, the difference is not necessarily enough to be worth the additional cost. Do you know friends who regularly fill their tank with unleaded 98? Unleaded 95 or 98? Bewertungen: 22. 8 liters of petrol = 8000 mls / 40 = 200 mls. If you have a high-performance engine, go for 98 in terms of power. Thanks. That is the difference. As to my friend's NZ new Nissan Maxima ST 2005 3.5L I understand that mixed octane is OK and won't do any harm to the engine which makes me feel a bit of relief. If the vehicle is designed to run on 91, you're usually best to stick to that as there's generally no benefit in running a more expensive, higher octane fuel. If you open the fuel flap of your car and it says ‘unleaded petrol only’ it means 91 octane fuel is OK. 91 or 95 (or 98) octane petrol – which to use. “My car only gets to drink fine unleaded 98.” The intentions behind such statements are usually good, but in most cases the cheaper unleaded 95 is the better solution.