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Old 10-20-2016, 09:42 AM   #1
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Diesel additives

Just had my diesel coach worked on by a local mechanic and he swears by using an additive at every fill up. His favorite is made by Howes and its called super kleen. My question is do others also use some sort of additive and if so are they seeing improvements in performance , mileage , etc. or is it just a piece of mind thing. I guess I should also add that my engine is a 2005 C-7.
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Old 10-20-2016, 09:52 AM   #2
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The only additive I use is a anti-gel additive made by Howes. I add it to my fuel tank in the fall when I put it in storage. That way when I leave for Florida in February or March it will not gel up on me until I get further south. I have never had a problem.

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Old 10-20-2016, 09:56 AM   #3
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As long as you don't have a DPF (which you don't) then additives are fine.

I own 2 diesels, the coach and my truck. Additives seem to trigger more regen cycles. There are DPF cleaning additives but they are mostly garbage.

Your best bet is just anti-gelling for the winter months and then a cleaner every oil change.
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Old 10-20-2016, 12:30 PM   #4
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Old 10-20-2016, 02:15 PM   #5
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Only additive that I use is an anti-gel in winter months and a biocide when it's not going to be used for awhile (winter months mainly).
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Old 10-20-2016, 02:50 PM   #6
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The only additive I use is Biobor JF. It prevents microbe growth in diesel fuel which can cause very expensive repairs. 1oz to 80 gal of fuel is all that is required.
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Old 10-20-2016, 02:54 PM   #7
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Old 10-20-2016, 03:00 PM   #8
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911, service power and seafoam it works... If you've never had algae growing in your fuel tank it grows good in Texas.
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Old 10-20-2016, 04:00 PM   #9
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Another vote for Hughes, full timing 6 years and no problem,Walmart now sell it for under $10.00 sure beats Flying J prices
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Old 10-20-2016, 04:09 PM   #10
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I use opti-lube, it has helped my mileage, a little, not a great amount but my mechanic says the big thing is it lubes the fuel injectors which our current fuels do not. 1/4 oz per gal at fill up. There is are a lot of posts about this subject.
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Old 10-20-2016, 05:03 PM   #11
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Quote:
Originally Posted by Petro View Post
The only additive I use is a anti-gel additive made by Howes. I add it to my fuel tank in the fall when I put it in storage. That way when I leave for Florida in February or March it will not gel up on me until I get further south. I have never had a problem.

Don
I agree with Petro. No additives needed unless you store it during the winter months (like I do) and have it ready for an early exit come spring. I too add an anti-gel additive for the winter months while it sleeps in the garage. Otherwise, no additives.
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Old 10-20-2016, 06:34 PM   #12
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Bottle of Stanadyne every 36 gallon tank. No more problems w/pump & injectors.
I refill the little bottles to save a few pennies.
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Old 10-20-2016, 07:11 PM   #13
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I use opti-lube summer blend.
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Old 10-20-2016, 07:56 PM   #14
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Don't know which chassis/ engine you have. Cummins says not to use additives. I was using Lucas, and at a training seminar with Spartan, if were they told us don't waste your money.
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