I get over 30mpg on straight diesel, mainly do 25 mile run twice a day, i sit at 70 on the motorway for half of that. If i take it over 70 its really noticable the difference.
 
More than I planned ...... £800/900 ..... a lot of diesel.

I can save about £55 a tank using SVO so I reckon two years at current driving before its paid for itself.

Did it to see why so many folk seem to have problems with SVO and I guess its down to them using poor bits and bodges?
 

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