Fuel treatment? - Page 2 - Ford Powerstroke Diesel Forum
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post #11 of 15 Old 04-13-2019, 07:11 PM
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@mhatlen swears by Power Service diesel kleen . He said it keeps his EGR and intake manifold very clean as far as soot build up .
I switched to it but haven't paid attention to results . I add it every tank out of habit .
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post #12 of 15 Old 04-13-2019, 07:46 PM
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Originally Posted by mohead1 View Post
Cool....i swear the opti-lube gave me at least 1.5 mpg on normal daily, and 1 mpg on towing with a 15k lb load...truck runs good...i gotta really watch cuz its rollin on but my temps are headed for 800+ if not careful...i like around 72 mph at 780 deg F

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I'm not sure what it has changed for fuel economy. I bought my 6.0 in Nov. of '17 with 142 on the clock and have used Optilube from day 1. I had a 7.3 before the 6.0 and had read about the negative effects of the ultra low sulphur diesels. So after a lot of searching I chose the Optilube never thought to check the economy. So when I went 6.0 I just carried over the habit.

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post #13 of 15 Old 04-14-2019, 02:23 AM
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I have a hard time with the idea that a fuel additive can increase fuel economy by 10% - even by 5%. Something like that is hard to prove since driving conditions are hard to keep consistent!

That said, I log every fuel fill, as well as where I got the fuel. I chart it and do statistics on it to see when I get an actual change in fuel economy (vs. normal variability). I see the downshift trends fairly easily (switching to larger mud terrain tires, or after a tune install). You can sure see when a brake caliper sticks. I don't see very many improvement trends unfortunately and with wind that can blow at 30 mph or drop to 0 mph, and can shift directions constantly, the normal variability in fuel economy is pretty high. I have done trials where I added fuel treatment for 10 fill-ups in a row and then quit for 10 fill-ups in a row. Tried to only drive the 30 mile trip to work during those trials. I couldn't see any real improvement or a decline associated w/ its use or discontinued use. I do think it can impact the soot situation - to a degree.
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post #14 of 15 Old 04-14-2019, 11:30 AM
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I never saw any noticeable increase in fuel economy in my 6.4 or my 6.7. The engines both run better with it however, and I get a longer distance between regen with a shorter regen. Not really applicable to the 6.0, but it does mean fuel is burning better/cleaner.

The only real benefits are lubricity and water removal... On newer high pressure common rail fuel systems, its a HUGE deal. Not anywhere near as important on a 6.0 or 7.3 with a HEUI system, but its still a good idea.
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post #15 of 15 Old 04-15-2019, 06:13 AM
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Originally Posted by CrazyS0b View Post
I never saw any noticeable increase in fuel economy in my 6.4 or my 6.7. The engines both run better with it however, and I get a longer distance between regen with a shorter regen. Not really applicable to the 6.0, but it does mean fuel is burning better/cleaner.

The only real benefits are lubricity and water removal... On newer high pressure common rail fuel systems, its a HUGE deal. Not anywhere near as important on a 6.0 or 7.3 with a HEUI system, but its still a good idea.
So I've been using Diesel Kleen - Cetane Boost every fillup. It says 80oz does 250 gallons. So I have the 26 gallon tank, so I would use 8 oz for that. So since I fill up at 1/2 tank, I go with 4 oz every fill up.

I will say, my truck runs clean. I can't say anything else. I got the truck in the winter so mileage was **** anyway. Now I'm getting 1.5 to 2 mpg better but that could be due to summer blends showing up.

I do like using it though. Truck seems to run smoother, but that being said, I haven't had it long enough to really tell either way. After I gelled my fuel in the 0degree Nebraska winter, I started using the Winterizer and the Cetane Boost at each fill up. Now that its above 30 degrees I use Cetane Boost only.

Can't hurt to use it. May hurt not too.

When it comes to mechanics, everything I know is from either breaking it or watching someone else do the same. Then I had to fix it....Is that bad?

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