Down here in South Texas, some call it Central Texas I'm not too worried about fuel gelling. But, I am wondering if fuel additives are necessary.

I read alot of you guys religiously add stuff to the fuel. Does it really do anything? Should I or should I not add fuel additives? Why or why not? What do you add and what does it do?

I have an 07 Cummins 5.9

Thanks
Randy

 

Randy.....I agree where you are gelling is a non-issue however you need to address the fuel lubricity......the new ULSD is dry as when they removed the sulfer alot of the lubricating properties went with it................yer CP3 dont like no dry fuel and will suffer gradually till one day it will give up the goast.............the fuel suppliers are supposed to be adding a additive package b4 it goes to the end user (YOU AND ME) but it dont always happen....been there done that myself as I delivered transport fuel myself for a couple years.........anyway to answer yer question I would add some 2 stroke oil in every tank to get the lubricity back..................2 stroke oil is ashless and is ment to be burnt.

I read alot where peeps put used motor oil, new motor oil, ATF and all kinna crap in there tanks..............each to his own but I myself dont want that in my tank

Like I said each to his own........and I dont wanna argue about it either

 

A good additive is probably cheap insurance. Lubicates the pump, stabilizes fuel, improves fuel economy, improve emissions, etc. There are many...I can point to one

 

here is some good info from an independent study

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By the chart, I think it tells me that I want the additives in the green and blue bands to address the lubricity issues.

What about other fuel contaminants or irregularities? Water, algae, bacteria, cetane ratings... anything else that needs to be adjusted or corrected with additives.

I've noticed that I've had a bad tank on occassion, a little rougher idle and some white smoke at idle. Everytime I turn around I am reading that DC rejects another warranty job due to bad fuel. I don't want to be a statistic.

 

A litttle two stroke sure keeps both mine happy, been running it for almost two years now, no issues what so ever.

 

I run Power Service in the silver bottle at every fill up. I used to run 16oz of 2 stroke oil too, but I got tired of buying it.

 

By the chart, it looks like the best for lubricity is a splash of biodiesel.

 

solarwarp,

Being you have a 2007 I would say up to 5% Bio is the best and if you just want a quick clean up of your injector then use some of Heaths stuff. If your in a hurry then Lucas has worked very well in my truck. I never have had good luck with 2 cycle oil so I can't recommend using it at all thou I hear it works OK in the older engines.

JMHO

 

I can just remember my old Yamaha... I don't want my Cummins to start sounding like that.

I guess there really isn't any overwhelming recommendation to treat the fuel except for lubricity, which a splash of biodiesel will take care of.