What is ATF supposed to do?:rof It is lubed by engine oil on the bottom and fuel on the top. Don't submerge it in anything. If you have doubts about it's internal cleanliness take it to a pump shop and have them run it on a bench.

 

That's why I am asking, I know top and bottom are lubed differently. Granted people do add atf to fuel, I still found it odd. Local shop wants 300 to bench the pump.

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.....people do add atf to fuel....

Fully informed people do not add anything to fuel other than additives that are designed for use in diesel.

 

I would put it on the truck leave injector lines off and crank motor to blow fuel out the top then install injector lines.

 

I bought an engine from a guy who had left it sitting on a porch in a very dusty area. The fuel lines to the injectors had been removed for some unknown reason. What you suggest is exactly what I did, and I thank you for reminding me.

So there you go OP. Save the $300

 

Pardon me for not being fully informed then. Although I'm sure people will say either way on adding substitute lubricant to fuel. Where as I have never personaly used ATF in any fuel I have ran, I have although used 2 stroke oil in it. I'd venture to say I'm not the only person on this forum that does so due to the lack of sulfur in today's fuel.
Please correct me if I am wrong.

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I have although used 2 stroke oil in it. I'd venture to say I'm not the only person on this forum that does so due to the lack of sulfur in today's fuel.
Please correct me if I am wrong.

You are correct that there are others who use potions in their fuel. However, the lack of sulphur in ULSD is a good thing. You are wrong if you believe sulphur is a lubricant, it is a corrosive and a poison when burned. It is true that the process of removing sulphur from diesel also strips away some of the natural lubricants. However, those lubricants are added back to the fuel before it is shipped to the stations where it is sold. I know there are numerous faulty references to sulphur in diesel being a lube, they are pushed by the additive companies who want to take money from your pocket. The two cycle oil myth is unexplainable, other than the phony "study" that has bounced around the net for the last six or seven years. If there was any truth that extra lube was needed in diesel you would find that truck stop trash cans would be filled to the brim with empty additve bottles. I utilize truck stops on a regular basis and have never seen a trucker pouring anything other than diesel into his tanks. If someone who relies on their engine to make a living doesn't use additives it should tell you something. Need more proof? My injector pump is the original and has never had any fuel lubed parts replaced.