Fuel

[Poopdog]

Whats everybody using regarding petrol?
unleaded, super unleaded ? I know in America the fuel octane rating is low so would assume UK unleaded is just fine or are the European spec Vipers tuned for better quality fuel?

[sonicbloo]

I use super unleaded if its available, but sometimes just put regular in as it's all my local filling station have

Haven't noticed any difference whatsoever

[rup999]

Super unleaded for me - mines been remapped for 95+ octane. At 10mpg the cost difference is irrelevant.

[Poopdog]

Agreed about the cost difference regarding mpg but I know if you put in super unleaded in cars that are meant to run on ordinary unleaded they dont go any faster with higher octane fuel.
Just seeing what people mainly use, mines a gen2 so presumed ordinary was just fine?
Might think of a remap then

[unsprung]

Poopdog said:

I know in America the fuel octane rating is low so would assume UK unleaded is just fine or are the European spec Vipers tuned for better quality fuel?

"Because of the 8 to 12 octane number difference between RON and MON noted above, the AKI shown in Canada and the United States is 4 to 6 octane numbers lower than elsewhere in the world for the same fuel."

https://en.wikipedia.org/wiki/Octane_rating#Anti-K...

[mrfunex]

I've only ever put 95 in mine (I think at one point, a bit of digging suggested this was equivalent to the US "premium", as suggested in the handbook)

Might have a go with a few tanks of 97/98, just to see if there's any difference?

[300bhp/ton]

Poopdog said:

Whats everybody using regarding petrol?
unleaded, super unleaded ? I know in America the fuel octane rating is low so would assume UK unleaded is just fine or are the European spec Vipers tuned for better quality fuel?

Why do people in the UK always think fuel in the USA is lower quality? Rationally it is such a barmy assumption to make, based on zero fact or evidence.

[Ginja]

I only ever used 95 in mine, they run fine on it.

Edited by Ginja on Tuesday 15th December 13:06

[Viper]

I remember reading a EVO magazine a good decade ago, they ran x2 brand new identical BMW’s for 80,000 miles one on unleaded, the other on super leaded

Then they had a look inside both engines, the car running super unleaded was spotless, and looked like new, the other was black and a bit grubby

I used run both unleaded and super, in the viper