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Fuel additives

Discussion in 'Technical Discussion' started by Jnicholas, Mar 26, 2014.

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  1. Marmot

    Marmot Senior Member

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    Context old boy, context. The post you referenced was made in response to someone who claimed that the IP on a DD needed to be adjusted.

    And if you are counting on people not bothering to follow the link, let me quote it for you.

    "You told the guy that he would have to have his DD injection pump adjusted after R&R'ing his injectors or he would risk having high EGTs because there would be too much air because the turbo is the same size and the fuel quantity is less. That is the most amazing nonsense I have read in a long time.

    Would you like to tell us more about the "IP" on a DD 2-stroke?"



    Since you apparently don't know, DD two strokes use a "unit injector" that incorporates a high pressure pump within the same housing as the nozzle. There is no separate injection pump as is most commonly used on the same size 4 stroke engines to supply a multiple of injectors, nor does it use a single but separated injection pump for each injector as is common on larger engines.

    If you are trying to continue your silly attacks from 2009, you haven't done any better this time than then. I don't know what your problem is but there are better places for you to vent your anger than in a discussion about diesel fuel. Find one.
  2. Bamboo

    Bamboo Senior Member

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    Palm Beach, FL
    No context needed. You stated then DD's don't have a IP. I just said my engine does not have an IP. Are you questioning yourself? The rest of your backhanded insults will be ignored; I have no wish to roll in the mud with anyone. In the mean time would you agree that Canola oil will help with lubrication of the fuel system when added in very small amounts to the fuel?
  3. Old Phart

    Old Phart Senior Member

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    I dunno
    Why be partial green?

    Be a full blown Martian (green men from Mars Sci-Fi thingee) and run the diesel engine on 100% Canola Oil.

    Let GOOGLE be your guide.

    P.S.- Good job on the wiggly dipstick tube.

    http://www.yachtforums.com/forums/t...loose-dip-stick-tube-16v-92-a.html#post192769
  4. Marmot

    Marmot Senior Member

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    If I recall correctly, canola oil is one of the "essential oils" used by refiners and the additive producers who make and sell additives to refiners.
  5. sunchaserv

    sunchaserv Member

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    My paltry few tens of thousands of boat diesel fuel burned does not match up to the tens of millions of gallons I have seen burned in off highway mining use. Nothing complicated here, Cat and Chevron are the industry leaders on this subject.

    Chevron's website is replete with additive descriptions they add to their refining processes to insure not only lubricity but many other criteria also. Cat's testing facilities for at least 70 years has run and tested many different specs of fuel and lube oil to insure warranty and longevity can be attained. Cats warranty stipulations can be pulled up online and as ksbguy and others have said, Cat fuel spec descriptions leave little doubt as to what they will accept for fuel lubricity criteria.

    BTW, a few of you guys can ignore Marmot at your own peril. He knows this stuff.
  6. Caltexflanc

    Caltexflanc Senior Member

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    At least as far as old Detroit 2 strokes go, the whole additive and lubricity thing is BS. In the last service manual they published earlier this century for the 92 series, there is a long section on fuel specs; they specificify a sulfur content maximum and the need for more frequent oil changes if that maximum is exceeded. Their explicit position is that the lower the sulfur the better; the lubricity issue was long long ago addressed in the formulations at the refinery. They recommend no additives for operating engines. They do suggest adding BioBor if the fuel is going to be stored for a long time during a lay up.

    Buy fresh fuel at high turnover docks and keep your filters clean.