A lot of people swear by Liquimoly Diesel purge, particularly on MB and VAG diesel forums. Its a solution that you run your engine on straight rather than added to the tank. I've ordered a can try out on my 300Tdi [I'm only taking my injectors out if new ones are going in].
Only issue is, if I run the injector pump inlet and return lines into the purge solution, the lift pump will still run and flood diesel everywhere. As such I'll just fill up a new fuel filter with the purge and screw that on.
LIQUI-MOLY Fuel and Oil Treatments & Additives
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