99 & up 7.3L Power Stroke Engine and DrivetrainDiscussion of the 99 & up 7.3L Power Stroke diesel engine and drivetrain in the 1999-Up Super Duty trucks and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 7.3L Power Stroke engine.
Hey Guys, is there much of an upside to adding 2 cycle or ATF to your fuel? A buddy of mine said adding some ams oil 2 cycle to the fuel will help with the new low sulfer gas killing o-rings. My dad swears by ATF to keep injectors and what not clean.
Are there any down sides to using one or both? I'd like to keep things clean and lasting longer as I really like the truck...
Ive never been convinced atf/oil in the fuel did much...the oil companies do add lubricant back into the fuel whether to displace the sulfur removal or ? Do what you want, diesel engines will run on straight oil if you wanted it to.
Have you ever had problems with the fuel destroying orings?
Nothing I can really narrow down to new fuel... I did have to do the orings on the fuel bowl the other day, but then again the truck it 12 years old...
The owner's manual states that the 7.3 was engineered to use Low Sulphur not Ultra low Sulphur diesel fuel. Additives try to compensate for the change in fuel. I would think that ATF or 2-stroke oil both have some benefit. However, I would go to Wally World and buy some diesel kleen as it will also improve the cetane level. Research this topic as there is a ton of information about the issue.
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2001 F-250 4X4 CC SB 7.3 4R100 3.73, BFGoodrich All-Terrain TA/KO, Motorcraft filters, Mile Marker manual hub locks w/ESOF (No hub "floating"), AIH delete, Rust-Oleum bed coating, Silverstar Ultra headlamps w/ clear headlight assemblies, 5,000K LED interior lamps; Moog greaseable u-joints, ball-joints, front hub assemblies; retractable bed hitch, original black CPS (BEST "mod" I have), Energy Suspension bushings, Red Heavy Duty ELC, Edge Evolution 15001 (for gauges), Walker BTM, Donaldson AIS
What's the rating for LSD or whatever it was before that? We used ATF in my 96 7.3 and it got 640k miles on factory injectors. I notice the biggest power increase with the Diesel Kleen winter blend.
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2001 F350 7.3 4x4 CC SRW/ Aeroforce Interceptor/ BD Thruster II/ Bellowed Up-Pipes/ 4" turbo back straight exhaust / CCV Mod /DIY 6637/ TS chip reburned with PHP tunes (Stock, 40 Tow WITH Whsiper tune, 80 Daily Driver, 100 Race, 140 Extreme, 140 smoke show)//Recon smoked cab lights/MM Hubs/Hood/HPx/FRx/GPR switch-Indicator
First vehicle (still driving): 96 F250 XLT 2x4- All factory (injectors & turbo) except straight exhaust. 570k miles
So i was....half, maybe 1/3 right? That study is cool RT, interesting that motor oil doesnt improve it at all. I just dont think it is as critical of an issue as some make it out to be, not to say the new fuel is as lubricating as LSD. Fuel cleanliness is something i would be more worried about. You can tell a difference in modern offroad diesel though..it smells just like paint thinner.
I throw a quart of 2-stroke oil in the tank at every fill up. I don't notice any performance or cold weather start-up gains but the injectors are noticeably quieter.
I throw a quart of 2-stroke oil in the tank at every fill up. I don't notice any performance or cold weather start-up gains but the injectors are noticeably quieter.
Wish the forum had a "like" button... I concur lone star... injectors MUCH quieter
RT, that is good information to have. Kinda shoots the Marvel Mystery oil and Pixie P additives down. But like all statistics that are comparative this one compares a 2007 fuel that was at one end of the bad scale to what improvement the additives would make to that paricular batch of fuel. I wonder, because I don't know, if there have been improvements made in the fuel supply chain that make additives less needed in the last almost 6 years.
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2002 F250 7.3L PSD, bought new now at 202K miles, 4R100 Auto, Crew Cab, Short Bed, ITP Regulated Fuel Return system, ITP head to head SS oil cross over, Hutch in tank mod
Harpoon de tank vent, DIESELSITE Dahl 100 Pre-Pump Fuel Filter, DIESELSITE Return Fuel Line Cooler, DIESELSITE Engine Coolant Filter, DIESELSITE Auxilliary Transmission Cooler, DIESELSITE Gage Package, Pyro, Trans & Boost, Extreme Diesel AD injectors, Ford AIS Air Filter System, BTM straight through muffler, Moog Ball Joints, Rancho Shocks, Rotella ELC Coolant ,Stock Engine Program
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That study is cool RT, interesting that motor oil doesnt improve it at all. I just dont think it is as critical of an issue as some make it out to be, not to say the new fuel is as lubricating as LSD. Fuel cleanliness is something i would be more worried about. You can tell a difference in modern offroad diesel though..it smells just like paint thinner.
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