Premium fuel vs Regular fuel

[JaswinderSingh]

I want to know is there any benefit(Mileage wise, Performance wise) of Premium fuel instead regular fuel.

[Hillbilly]

Well as VW specify it the difference may well be that running lower grade may stuff your motor.

Im not game to try.

Interestingly in the USA the standard grade is only 87 Octane and in one place 86. Premium is 91. Must be slightly different rating to here perhaps. Maybe a US member can tell us.

I did 13700km in a rental Hyundai Tucson and it went like the clappers on it.

[team_v]

VW requires a minimum of 95 Ron.
I would reccomend 98 Ron as it is better for the car and the cost difference is marginal.

If the car is tuned or has a high output it should only run 98 Ron.



The US has a completel different system where they have 91 compared to our 95 and 93 compared to our 98.

[Hillbilly]

VW requires a minimum of 95 Ron.
I would reccomend 98 Ron as it is better for the car and the cost difference is marginal.

If the car is tuned or has a high output it should only run 98 Ron.
The US has a completel different system where they have 91 compared to our 95 and 93 compared to our 98.

Cost is over 10c a litre where we buy it but cheaper than a new motor LOL

Yep thats the ratings in US rental company said run it on the cheapest so I did

[The_Hawk]

I haven't done the tests in a long while (and not in a modern VW), but everytime I have done it in the past it works out that 98 gets more KM per tank and the cost difference works out to be almost NIL or slightly in your favour AND you get to have cleaner burning fuel which is theoretically better for your car...

So at no additional cost in the long term, it's a no brainer for me.

[Amalgam]

Engines are designed to perform at specific octane rating. Most Europeans require 95RON as that is the lowest RON fuel that is available in the EU.

Running your engine on a lower RON fuel may cause your engine to detonate or ping especially under load and acceleration. Most engines can compensate for a lower RON than specified. This should be used only in emergency and only to get you to a petrol station with the correct fuel. Long term use may cause severe engine issues, even failure.

Running your engine on a higher RON fuel may or may not provide any improvement in terms of power or fuel economy.

Premium fuels, especially diesels may or may not contain fuel injector cleaners and other magic potions.

[Creampuff]

tested this many times, 98 gives better fuel economy. Tests were done on TV show 5th gear and only Shell 98 had better performance. I am on my 5th car and will only use 98.

[fred27]

+1 on all the feedback provided, 98 no brainer....

[greg32]

The difference here in Orange is 5c. I haven't noticed any difference between the two. The other point is that 95 is a high turnover at some stations and 98 can be a slow mover and goes stale at the station and no better than 95. The other factor locally is there is no discounting and price cycles so fuel is always at the premium end of the cycle. I see price differences of up to 25c when I go to Sydney.

[stefcio007]

Didn't see too much of a difference between 95 and 98 for fuel economy. I've always filled up 98 at BP, is Shell any better? Is there really a difference between the two 98's?