Best fuel additive for the 6leaker

chappy

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Well I have been using shaffers soy shield for years and I finally ran out. I remeber a study of diesel additives from a few years ago and optilube xpd was right at the top better then shaeffers additive. It would be roughly $2.35 a tank (25 gallons) for me to run the optilube xpd which is what I was paying for the shaeffer. So anyone else run it or know of a more recent study on fuel additives?
 

Atsah

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Never used the stuff... I use Motorcraft perfromance cetane additive.. My 6.0 runs great with that stuff in it.. I buy it by the gallon, it's $36.00 at the dealer.. 4oz per 25 gallons, I put 8oz in everytime I fill it.. I run it year round..
 

Irontx

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To be honest yall.......the only difference I ever noticed out of any of them was my wallet got lighter. I dont see what difference yall see.
 

Atsah

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To be honest yall.......the only difference I ever noticed out of any of them was my wallet got lighter. I dont see what difference yall see.

When you raise the cetane level of your fuel from 36-42 at the pump, to 50 consider how much better your fuel burns.. Cetane levels in my area is in the 36-40 range.. My truck runs a lot better with Ford cetane in it.. A high cetane rating also helps keep your EGR system working cleaner if it's intact.. This has been my experience over the past 10 years..
 

strokin6L

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DO NOT RUN ATF IN THE FUEL ON A 6L!!! It might be ok in a cummins or 7.3, but the injectors on a 6L are waaay more picky than anything. Only thing i use is Opti-lube XPD mixed with supertech 2 cycle oil from Walmart.
 

yeehaw

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To be honest yall.......the only difference I ever noticed out of any of them was my wallet got lighter. I dont see what difference yall see.

same, ran power service a couple times in winter mostly for an antigel, truck always seemed to run worse and get really bad MPG

i havnt ran any in the last 12k or so, truck runs great
 

silverbullet4x4

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I was told when i bought the truck to run fords cetane booster, which i did up until recently. I have no idea if it's necessary or not but since i don't drive the truck all that much while at school i don't put it in anymore. I will say the truck did seem to start better in the winter with the cetane booster in the tank.
 

DEEZUZ

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I've pretty much stuck with Stanadyne since I got the truck. Noticeable difference in how the truck runs. I've heard mileage claims, but I've yet to put it to the test. I figure it costs me about $2.50 extra per tank.

http://www.stanadyne.com/view.php?id=74

+1... We buy 2 pallets 3 foot high of this stuff every winter... it goes in every truck to keep from gelling. Also alot of our fleets run it and swear by it... I run it in my trucks. Every tank in winter and every other in summer
 

worldwide73

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When i use premiun diesel I don't use anything, otherwise it 2cycle, powerservice, or penray depending on what in my truck box.
 
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