Zinc additive

Slant 6 Engines

  1. williaml

    williaml Well-Known Member

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    Just had my engine re-built and ready to install the engine company told me I have to add a zinc additive for the cam otherwise I could damage the engine? Which is best?

    Thanks always
     
  2. Paladin06

    Paladin06 Well-Known Member

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    I use ZDD Plus.
     
  3. marksmopars

    marksmopars Well-Known Member

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    I used a racing oil that has the zinc incorporated, I hate playing chemist.
     
  4. Bad Sport

    Bad Sport HALF A BUBBLE OFF Staff Member FABO Gold Member

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    I use the brand NAPA sells, don't remember what it is though.

    And yes you should run the zinc or an equivalent oil. I "think" it's Valvoline that makes an oil that states it's not to be used for street use, it has the zinc.
     
  5. 6pakattack

    6pakattack Well-Known Member

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    I was advised by my builder (owner of the MOPAR MISSILE) to use RACING OIL too,for the reason you state !!
     
  6. Paladin06

    Paladin06 Well-Known Member

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    Or just use Z Alt musclecar oil.
     
  7. BillGrissom

    BillGrissom Well-Known Member

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    I used Lucas something ~2 pts. I recall it is called "break-in oil" or such. Comes in a plastic bottle w/ long snout.
     
  8. Purple Haze

    Purple Haze Well-Known Member

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    Eastwood Company now sells ZDDP for $6.99 a bottle.
     
  9. LH23H2R

    LH23H2R Well-Known Member

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    Look for oil with an SL and earlier rating (but not as far-back as SB ! ha ha ha ) , or SM so long as it's got ZDDP in it .

    I use Valvoline 4-Stroke motorcycle Oli as it's got ZDDP in it already ; alternately , "Racing" oils are acceptable ( Valvoline , again , but mostly all you'll find in stock are 30w , et seq.) ; and even the fledgling synthetics have specific "break-in" oils (Royal Purple , for instance) ; or , in the case of Mobil1 , their 15w50 has the most ZDDP versus other common brands .

    The API ( American Petroleum Institute ) , via pressure from the auto manufactures once 100,000 warrentees hit in 2006 , removed ZDDP from motor oils . The shitty part is that they failed to change the rating (to something like "SP") !!
     
  10. airwoofer

    airwoofer Drivetrain limit explorer

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    What's wrong with the Comp break in additive?
     
  11. 71and done

    71and done Well-Known Member

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    Napa sells Valvoline not street legal with the zinc added. It was $6.99 a quart. they may not have it in the store buy they have it at their warehouses.
     
  12. 412 Stroker

    412 Stroker Well-Known Member

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    I use Valvoline Durablend and this:
     

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  13. BBBCUDA

    BBBCUDA Well-Known Member

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    Been using the Lucas stuff. Ignore the directions that say to use a full bottle. I think SlantsixDan on here did the math, and it only takes a few spoonfuls to equal the Zinc levels of the old oils. I have also been running 15-40 Diesel oil, as it has a higher Zinc level, is normally cheaper, and 2 of the gallon jugs fits nicely in my 8 qt. pan.
     
  14. zhandfull

    zhandfull Well-Known Member

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    X2 I put a bottle in ever oil change now and run the standard oil from the auto parts store.
     
  15. stumper

    stumper Well-Known Member

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    I would recommend not using both a Zinc additive and one of the high zinc oils. I have read some studies that indicate too much zinc / phosphorus (excess of 1600 ppm) can cause problems. Might not be one of those things where if a little is good a lot has to be better. I would run a break in oil that has the high zinc for the first few hundred miles on your new build and then run the high zinc oil after that (at least 12-1300ppm). The break in oil is usually petroleum oil while the high zinc muscle car oils come in both petro and synthetic - and a mix.
     
  16. Rocky_JS

    Rocky_JS 'cuda

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    Valvoline VR1 oil contains ZDDP (Zinc Dialkyl Dithio Phosphate) = Zinc and Phosphorus) ie anti wear properties we need in our oils. AMSOIL and some others.
     
  17. shanson30

    shanson30 Well-Known Member

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    I've heard good things about shell rotella T. Any comments
     
  18. mcodecuda

    mcodecuda Senior Member

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    They have dropped the level of zinc in the Shell Rotella about 3 years ago. I plan on using Brad Penn on the next oil change.
     
  19. LH23H2R

    LH23H2R Well-Known Member

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    "Not Legal For Street Use" , is emblazened across the labels as ZDDP , after absolutely YEARS , ruins catalytic converters .

    I've got a BETTER Idea : get rid of catalytic converters ! Such an archaic piece of emissions equipment ...
     
  20. duster wonder

    duster wonder National Guard Member

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    look for quaker state "defy" oil.. has extra zinc in it but probly not the same as a atitive

    what i use n so far my motor hasnt blown up so must be doing something
     
  21. seabee

    seabee FABO Gold Member FABO Gold Member

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  22. 70aarcuda

    70aarcuda Master Hoader of SBM FABO Gold Member

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