Additives
Logistics Pro
Joined: Feb 2005
Posts: 3,952
Likes: 117
From: Upper Left Coast
Not usually all that beneficial for the people that buy them. There is no mechanic in a can.
Fleet Mechanic
Joined: May 2010
Posts: 1,480
Likes: 161
From: West by God Virginyuh
The only additive I’ve done some experimenting with is the Motorcraft Cetane Booster. I had 3 different 2008 F450’s with the 6.4 engine, and based on my experience with them (first two totally stock, last one was tuned) using it in the ratio suggested on the bottle it was good for around .75mpg to 1mpg improvement. Using a little more cetane booster didn’t help, and using less definitely lessened the improvement.
On the 6.0 I honestly have not been able to find a significant difference with it.
On the 6.0 I honestly have not been able to find a significant difference with it.
Junior User
Joined: Dec 2019
Posts: 60
Likes: 0
Both the 7.3 and 6.0 (only ones I have personally owned) I use rev x and sometimes archoil (depends whats available at the time) as well as 2 stroke and cetane boost. Without question 2 stroke quiets things down and adds up to on my trucks 2 miles per gallon hand calculated. But always at least 1 mile per gallon. Rev-x and archoil,,,,, I started from reading and word of mouth. A well known diesel shop here highly believes in Rev-x and adds it to EVERY oil change in their facility. Good enough for me.
Postmaster
Joined: Aug 2015
Posts: 3,910
Likes: 18
From: NW IA
Opti lube anything FTW, second choice for cetane booster is Motorcraft.
Certain additives are worth the extra justified cost IMHO
For stiction, Archoil has worked the best for me but some like Rev X etc
Certain additives are worth the extra justified cost IMHO
For stiction, Archoil has worked the best for me but some like Rev X etc
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Mountain Pass
Joined: Sep 2019
Posts: 195
Likes: 15
From: British Columbia, Canada
Stiction - Archoil AR9100 - It actually works for minor stiction issues if it's build up on the injectors.
Fuel - Standayne Performance (blue) or lube formula (purple)
or the archoil ar6200 stuff
The diesel fuel these days is horrible can't hurt to add something. I hear lots of guys throw 2 stroke oil in to help but I've never tried that.
I honestly feel it's even more critical with the newer 6.4/6.7s that have such sensitive fuel systems. If I owned either of those I would 100% use archoil/stanadyne in every tank.
Fuel - Standayne Performance (blue) or lube formula (purple)
or the archoil ar6200 stuff
The diesel fuel these days is horrible can't hurt to add something. I hear lots of guys throw 2 stroke oil in to help but I've never tried that.
I honestly feel it's even more critical with the newer 6.4/6.7s that have such sensitive fuel systems. If I owned either of those I would 100% use archoil/stanadyne in every tank.
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Lead Driver
Joined: Jul 2004
Posts: 6,951
Likes: 512
From: Foothills, CA
Diesel Kleen grey. Have never seen any real proof, only anecdotal, that people have had less fouling in the EGR using an additive (don't know if it matters as long as it boosts cetane). I started using anything that would lube the injectors when we went to ultra low sulfur diesel and the lube additives were added (reportedly) at the distribution tank farms - didn't trust the possible Human error with that, having been a plant operator and seeing how many mistakes are made...
CA has a high minimum required Cetane (I believe it is 53), but I can tell a difference with or without the DK...
Just part of the cost of owning a modern diesel imho...
CA has a high minimum required Cetane (I believe it is 53), but I can tell a difference with or without the DK...
Just part of the cost of owning a modern diesel imho...
Fleet Mechanic
Joined: Sep 2009
Posts: 1,404
Likes: 14
From: Bloomington, IN
I use Motorcraft cetane performance booster with every fill-up and Archoil AR9100 with oil change!! I saw a noticeable difference when I started using Archoil (took a couple hundred miles to notice). My engine likes it, much quieter on cold morning start-ups! Never checked to see if it helped the mpg's!? As for the cetane, I have a good buddy that is the head diesel mechanic at our local Ford dealership, and he told me that cetane is a good insurance for healthy injectors but it wouldn't fixed anything but more of a preventive measure!
Thread Starter
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Junior User
Joined: Jan 2007
Posts: 84
Likes: 0
From: St. Louis, MO.
Thanks for all the advice. I have a 7.3 and just purchased a 6.0. The 6.0 is in the shop now getting the egr deleted, rod and main bearings, oil cooler, head gaskets with new heads and studs, and a new turbo. I hear fuel additives are very beneficial to the 6.0 so I was just wondering what you all use. My 7.3 I've got 326000 on it, I've never really ran any additives in it. But the 6.0 is no 7.3 as far as durability.
Cargo Master
Joined: Nov 2015
Posts: 3,422
Likes: 938
From: Fort Worth, TX
I've done some reading lately on ultra-low sulfur diesel and biodiesel fuels as compared to the diesel of yesteryear, and the differences in quality are enough to make my hair fall out. Removing the sulfur is the worst thing they could have done short of maybe blending it with water. Sulfur not only helped lubricate moving parts and seals, but it also created an environment that made it much more difficult for bacteria to set-up and reproduce; bacteria that eats the fuel, thereby reducing cetane levels, and can also clog filters. Sulfur reduction also results in the fuel's ability to hold more water in solution, as high as 270ppm when biodiesels are part of the blend. It almost seems like the greenies are trying to discourage anyone from making or buying diesel automobiles.
Do I use fuel treatment? Hell yeah I use fuel treatment... with EVERY tank. Like Dan said, "Just part of the cost of owning a modern diesel imho..."
Do I use fuel treatment? Hell yeah I use fuel treatment... with EVERY tank. Like Dan said, "Just part of the cost of owning a modern diesel imho..."
Thread Starter
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Junior User
Joined: Jan 2007
Posts: 84
Likes: 0
From: St. Louis, MO.
I've done some reading lately on ultra-low sulfur diesel and biodiesel fuels as compared to the diesel of yesteryear, and the differences in quality are enough to make my hair fall out. Removing the sulfur is the worst thing they could have done short of maybe blending it with water. Sulfur not only helped lubricate moving parts and seals, but it also created an environment that made it much more difficult for bacteria to set-up and reproduce; bacteria that eats the fuel, thereby reducing cetane levels, and can also clog filters. Sulfur reduction also results in the fuel's ability to hold more water in solution, as high as 270ppm when biodiesels are part of the blend. It almost seems like the greenies are trying to discourage anyone from making or buying diesel automobiles.
Do I use fuel treatment? Hell yeah I use fuel treatment... with EVERY tank. Like Dan said, "Just part of the cost of owning a modern diesel imho..."
Do I use fuel treatment? Hell yeah I use fuel treatment... with EVERY tank. Like Dan said, "Just part of the cost of owning a modern diesel imho..."