Marshall Booth wrote:

I would certainly suggest a water sequestering agent in fuel that's been setting for months or years. Once the water is bound, the algae dies and there's no need for a separate algaecide (or you can drain the fuel - that's the most complex, but safest solution).

Old diesel fuel can cause many problems despite the fact that the engine may start and run on it. Whether you drain the old fuel or not, as soon as it's been replaced with clean fresh fuel you probably should run a POWERFUL fuel system cleaner thru the system and possibly even a lubricity improver or a tank or two of biodiesel B20 to free up all the moving parts in the injection system.

Noted. I'll throw some Power Service in the tank before I try to start it and run some Diesel Purge once running - I guess there's really no point in making the engine run on poorer fuel than necessary, and a new filter is the first order of business once the glow plugs are working. I suppose I should dip the tank before starting, too, just to make sure there is in fact nothing living in there.

Thanks Marshall, and everyone else, too.

Tom

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