E350 estate strange MPG readings

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sjhalstead

Member
Joined
Nov 16, 2013
Messages
49
Location
Kirkcudbright
Car
E 350 Estate
On a long trip today about 300 miles. Doing well showing 46.3 MPG but suddenly went from approx range of 230 miles to 98 miles range 96,94,88,80,75 etc fearing a fuel leak i pulled over noleak. Put 25 litres into tank all good about 250 miles then very up and down. Any ideas??
 
Did the fuel gauge drop at the same time?
 
Diesel or petrol. If the former, possibly regenerating the DPF? Uses more fuel for a short period of time, which might affect range calculations. Just hazarding a guess.
 
diesel started acting up after about 250 miles of mway and A roads
 

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