[Shop-talk] diesel fuel question

[eric at megageek.com]

Does anyone know of a way to tell if diesel fuel has gone bad?

Here is my situation.  I have a large diesel fuel tank for my tractors on 
my property (so I don't have to buy 'over the road' diesel.)  The fuel in 
there has been there a few years.

My newest tractor (a small 25hp subcompact) started acting funny.  At full 
throttle, it seems to sputter a little.

Could be a fuel problem, but I would love to test the diesel somehow. Or 
is there a way of looking at the filter on the tractor? Or another test to 
do?

Related follow up, if the fuel is bad, and I have about 50 gals in a 250 
tank.  Can I just add fresh fuel to it, or do I need to drain out all the 
bad first?  What would be a good bad/good ratio to dilute the bad fuel?

Thanks!


"Be as beneficent as the sun or the sea, but if your rights as a rational 
being are trenched on, die on the first inch of your territory." Ralph 
Waldo Emerson 
-Who is John Galt?
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