[Shop-talk] diesel fuel question

[nick brearley]

Hi Eric,

First thing check the tractor fuel filter. If it has a grey mush coating 
it that's a pointer for poor fuel, or an old filter. If so change the 
filter as a first step then keep an eye on it regularly. You could fill 
a transparent jug or jar then let it stand for a few days, see if any 
water settles out.

I use about 500 gallons a year of gas oil (ag diesel) and always put an 
additive in it:

https://fastexocet.co.uk/product/fuel-store-plus/

Modern diesel often has proportion of biodiesel in it leading to 
problems down the line. Using that additive I've never had a problem. 
Regarding reviving the fuel the same company also supply a "Fuel 
Reviver". Never used it but here it is:

https://fastexocet.co.uk/product/fuel-reviver/

Like me the company is based in the UK but I'm sure a phone call would 
answer any questions. Looking at the website you can see they can supply 
an additive for just about any situation you can think of. They may well 
sell in the US and I'm sure US made products are available. Ask your 
diesel supplier.

Nick Brearley


On 24/04/2020 12:46, eric--- via Shop-talk wrote:
> 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
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>
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