I spend @ £2500 a month on Morrisons diesel mainly in the 2x Crafters, but also in a
Caddy
Doblo
Merc GL
Merc GLE
2X Passats
Mazda 6
BMW 5 series

Never had a problem, they all get their filters changed once a year
And the Crafters do in excess of 30mpg, on a 300ml run per day.

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