All has been well said by both gentlemen above

Just to add as per experience. Our family has 2 units of a modern crdi engine. They are of the same age (2 and 1/2 years). Each unit gets its fuel from different gas stations. The first unit has very corroded injectors and have been replaced by the dealer. The other one still fairs better to this day.

Water is indeed an injector's worst enemy.
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