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Old 06-13-2014, 06:05 AM   #1
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Additives

Does anyone put any kind of additives in their fuel to help fight carbon build-up?

I see guy's putting 2 stroke oil in, and wonder what that actually does.


thanks
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Old 06-13-2014, 11:37 AM   #2
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Buy clean fuel keep it clean (This advice used to be printed on the gas cap for International Harvester (Farmall) Tractors).

Seriously the 2-cycle oil trick is one I have heard of .. 50 years ago, and it was proven to be a poor idea back then.

Chevy does produce an additive that might help Fuel Additives
That is really about the only one I can think of....

But modern computer controlled engines the problem is not nearly as bad as in days of old when folks where bold and automotive engine control computers were all analog and mechanical.
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Old 06-13-2014, 01:19 PM   #3
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I have a 2012 and the manual recommends against using them...

Notice: Diesel fuel or fuel
additives not recommended in
this manual could damage the
fuel system and
engine. Your warranty would not
cover this damage.

Diesel fuel that has been
mixed with engine oil or automatic transmission fluid could damage the engine and emission controls.

We do not test aftermarket
diesel fuel additives. Some
additives, particularly those
which contain alcohol or
water emulsifiers, could
damage the fuel system.
If you believe that unique
circumstances call for a fuel
additive to be used, consult
your dealer for advice.
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Old 06-13-2014, 09:44 PM   #4
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You might find this diesel fuel additive study interesting. You will note everything beginning at #13 tested worse than the baseline diesel fuel with no additive.
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Old 06-18-2014, 11:05 PM   #5
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I use 2 stroke oil in my Duramax but that is because it an LB7.The first gen D-max has injector issues and this is the only reason I use it.
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Old 06-29-2014, 10:47 AM   #6
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Quote:
Originally Posted by 05springdale View Post
Does anyone put any kind of additives in their fuel to help fight carbon build-up?

I see guy's putting 2 stroke oil in, and wonder what that actually does.


thanks
Additives are not going to help with carbon buildup, But what will help is reroute the PVC system to dump overboard instead on into the turbo horn, I did the reroute mod at 40k and the horn was covered with oil. Additives will help with lubricity in the cp3/cp4 and injectors, as the standard for diesel lube at the refinery is supposed to be constant, but I would bet it is not station to station that is why I add at every tank fill up.
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Old 11-10-2014, 07:20 PM   #7
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Never use an additive unless you like to waste money, It is amazing at how many people think they know more than the engineers who design their vehicle. Follow the owners manual and you should have no problems.
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Old 11-10-2014, 08:36 PM   #8
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Have read some articles that oil in fuel will damage newest common rail injectors.
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Old 11-18-2014, 12:07 PM   #9
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Quote:
Originally Posted by pitcrew18 View Post
Never use an additive unless you like to waste money, It is amazing at how many people think they know more than the engineers who design their vehicle. Follow the owners manual and you should have no problems.
I guess the engineers knew what they were designing when they did the LB7 injection system, you are lucky if the injectors last 70k, and did you know BOSCH told GM that a lift pump was required on the 6.6 but the engineers said no. Dodge runs the same CP pump and they never have the issues GMs have, go figure.... Did you also know every single HD truck off the GM assy line is 1 QT low on gear oil?? this saves the company millions but I guess they know since they designed it to run this way. prob the reason every single HD truck has a leaking rear axle bearing seal...
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Old 11-30-2014, 10:42 AM   #10
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What about older (1996) engines not designed for running the newer leaner fuels? Have been told by various truckers use a good additive or have lube problems. Any thoughts??




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Old 07-14-2015, 10:34 AM   #11
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Use Stanadyne every tank. Helps the injectors and pump. Recommended by my mechanic. 135k going strong.
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Old 07-18-2015, 07:32 PM   #12
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I use Power Service in the white bottle.
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Old 07-25-2015, 07:48 AM   #13
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Stanadyne is the only additive that won't void GM warranty. It also is a demulsifier, that is it will not allow water to pass through the filter. Cheap insurance in my opinion. The cp3 and injectors can set you back quite a bit. 145k and still going strong.
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Old 07-25-2015, 10:42 AM   #14
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Been debated on here many times. I have never used additives in my DMAX and don't plan on putting any in my CAT.
It boils down to whose hype you buy into. None of my engines burn oil and they run like a well tuned clock.
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