Most cars built for the UK market have been calibrated to work best with 95 petrol. In some countries the octane rating is lower than 95 and if you fill up your UK car with this then you may experience 'knocking' - a situation whereby the engine cylinder air-fuel mixture does not burn off fully.
A rough sounding engine is the likely result, although prolonged use of lower octane fuel might eventually cause engine failure. The same problem may occur if a high performance car uses normal 95 octane petrol when premium has been recommended. Higher quality or premium diesel contains chemicals that reduce soot and oil build up in your engine.
The type of fuel you should use should appear on your filler cap. It will also be listed in your car's handbook. As a general rule of thumb, non-high performance cars use regular unleaded 95 , and even high performance cars will run sufficiently well on it. We use cookies on our website. To find out more and manage your cookie preferences with us please view our cookies policy.
Request Callback. Is this correct? When your cars engine with carburetor is tuned for sea level driving, the gasoline octane rating should be determined on the compression ratio of the engines combustion chamber. The carbureted engine will start to smoke black smoke, too much fuel and start running erratically! Old hot rodders such as myself always carry a case with different sized main jets, and stop before the erratic behavior begins.
This is where you better have knowledge of how to disassemble your carb and reassemble it after changing jets. You want less fuel and more air, then a timing light to retard your distributors spark a few degrees. Simple eh? What does change the octane numbers in your gas is sudden stops,and sloshing around in a tank without baffles or foam blocks to keep the gas from doing the Big Slosh!!
I love my car and all of the tips and tricks that are on this site are very informative, thank you. I have a Ford f 5. I have heard that gas can make a difference in your vehicle. I just thought that the gas was different in price just to tell you that there are different kinds.
I wonder if I can use premium in my car. Hope this answered your question? This can make a huge difference in vehicles with available turbocharged engines. While older vehicles may be susceptible to engine knock when running on low octane fuel, modern ones are equipped with sensors to help prevent knock—and by extension, engine damage.
You might save money on gas, but in this situation, you get what you pay for. Research by AAA found that these vehicles saw a slight increase in performance and fuel economy using premium gas. Depending on what and how you drive, commuters looking to get from Point A to Point B may not notice the difference or care.
At the end of the day, it all comes down to your preference. Your car, your rules. Type: Car Ownership. Published: January 11, So, what's the difference between premium and regular gas?
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