I'm not overly keen on the fuelly banner, it's giving the wrong impression.
Date Miles Litres Price MPGNotesEdit
07/02/11 450.0 49.290 £1.34 41.5

03/02/11 453.0 49.979 £1.34 41.2

27/01/11 319.0 35.201 £1.34 41.2

21/01/11 416.0 46.121 £1.34 41.0

16/01/11 32.002 £1.32- This includes a top up with 10 litres of cold-filtered waste veg oil. So, 22 litres diesel plus 10 litres wvo. 267miles - 32 litres

10/01/11 261.0 30.499 £1.32 38.9

06/01/11 276.0 32.168 £1.31 39.0

02/01/11 313.0 36.578 £1.29 38.9

29/12/10 326.0 38.263 £1.28 38.7
So while the banner is reporting back an average of 39.9mpg, my actual mpg seems to be around 41.225 - a big leap from the 38s I was getting on just diesel.
And this is just on 1 gallon veg (with 3% petrol) to 9 of diesel.
I can't wait for the temps to settle in double figures so i can go for 2 gallons of veg to 8 of diesel, interesting to see what the results are then.
Hopefully, if i see a stable reading over half a dozen fills i can then put on the magnets? I could do it fairly soon but I'd love to see the effects of extra veg oil.