QUOTE(yoinkster @ 11 Jan 2010, 04:35 PM)
<{POST_SNAPBACK}>has anyone bothered to sit down and do the maths? People say they return more per tank with the more expensive petrol ... do you break even or are you still at a loss when compared to less miles from a cheaper tank?
Let's say 1
complete tank = 300-330 miles (24.8-27.3mpg). That's 55 litres yeah? So, let's call that £60 a tank, a smidge over 109p a litre so not a terrible estiamtion.
That comes nicely to £5-£5.50 a mile.
On average, would we say that SUL is 5p a litre more than NUL? So that tank would've cost £62.70, so you'd have to do 313.5-345miles per tank to break even.
I don't use SUL so I don't know what extra distance you can get out of a tank, perhaps someone can fill in the blanks (or destroy my theory
) ... But it does look as though the SUL is a good idea regardless of extra power it may provide.
It's late in the day, and I've been writing MINDLESS documentation all day, so my brain is a little addled.
Maybe I have misread/misunderstood your post - but, HUH? By that reckoning a tank of petrol costs £1,500?