Is E10 and 91 the same?
E10 petrol is actually a slighter higher octane (94) than regular 91 in a lot of cases, and that can mean your engine performs better. However, ethanol lowers the energy level of the blend by 30%, which means you may experience a slight loss in fuel economy.
Is 91 or 95 better?
The general rule of thumb is: the difference in fuel efficiency is about 1% per octane rating – 91 and 95 unleaded fuels, for example, have roughly a 4% difference. If there is a lesser price difference between the two, then its highly likely that its worth switching.
Is 91 better for your engine?
The main difference with premium is its octane rating — 91 or higher compared with 87 for regular octane. The higher octane gives premium gas greater resistance to early fuel ignition, which can result in potential damage, sometimes accompanied by audible engine knocking or pinging.
Is E10 petrol bad?
E10 petrol’s higher bioethanol content is corrosive to rubber parts, gaskets, seals, metals and plastics, which causes engine damage, so it could dislodge deposits in older engines and fuel systems, causing blockages. It should only be used with expert advice, which means pretty much never.
Does 91 have ethanol?
According to Dan McTeague, a noted petroleum analyst, Shell and Esso 91 are both ethanol free. All other grades from the companies have some ethanol content, but the mid-grade blend is pure gas, which means it not only corrodes less than ethanol blends, but is less likely to deteriorate when stored.
What is the difference between 91 and 95 petrol?
Compared to 91 octane petrol, 95 and 98 octane generally cost a further 10 to 15 cents per litre; these extra prices can vary around the country depending on location and competition between retailers. Most cars in New Zealand are designed and tuned to run on 91 octane petrol.
Should I use E10?
We’re encouraged to consider using E10 to help reduce potentially harmful exhaust emissions. Most, but not all, modern cars can use E10, so it’s important you check first before filling up with E10 fuel. That means they do not meet the fuel standards for cars recommended to use 95 or 98 premium fuels.
A 95 RON petrol is lighter and more flammable than a 91 RON petrol. The higher the octane number the more performance you would get from the internal combustion engine. Price is also a differentiating factor.
What’s the difference between regular 87 and premium 91 fuel?
The higher the fuel octane rating, the less noise will be noticeable on combustion. Additionally, octane levels also reflect the fuel’s burn-rate. Regular 87 fuel burns slower than Premium 91 fuel, which will burn hotter and create more combustion.
How much does it cost to use 91 octane petrol?
If, as specified, that car uses 91 octane petrol, the yearly petrol costs will be around $2,250. If 95 octane petrol is used, those costs rise to around $2,330 per year while using 98 octane fuel would see costs increase again to around $2,410 per year.
What’s the difference between 95 and 98 octane petrol?
If 95 octane petrol is used, those costs rise to around $2,330 per year while using 98 octane fuel would see costs increase again to around $2,410 per year. That’s a difference of between $80 and $160 per year for no real gain in performance or fuel economy.