Diesel injectors should last 100-150k miles.
I'm on originals at 168k. I managed to refresh them by running the car on 5 litres of diesel purge
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2012 Mercedes S350 Bluetec
2010 XC70 AWD D5 Euro 5 (205bhp) Geartronic SE Lux Premium
2010 V70 D5 Euro 5 (205bhp) Geartronic R-Design (parting out now)
2011 F10 BMW M5
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