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V6 Engine Oil

Discussion in 'Early CJ5 and CJ6 Tech' started by Jeremy Knakmuhs, May 7, 2019.

  1. May 7, 2019
    Jeremy Knakmuhs

    Jeremy Knakmuhs Jknakmuhs

    Parker, CO
    Joined:
    Sep 16, 2016
    Messages:
    46
    Likely a dumb question but what type of oil would you put into a 68' CJ5 with the V6? Dad can't even remember the last time the oil was changed so want to get that replaced, new filter, and oil pan seal as that is leaking as well. Also, since it has sat for a while, is there a good addititive to help clean the funk out with the new oil? Thanks.
     
  2. May 7, 2019
    Dave B

    Dave B Frankenjeep '67

    Northern Minnesota
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    Nov 10, 2009
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    From an occasional 20 degrees F. up to a rare 90 degrees F. = 10W-30 mineral, not synthetic for mine. Synthetic is probably fine too, I just haven't.
     
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  3. May 7, 2019
    FinoCJ

    FinoCJ 1970 CJ5 Staff Member 2020 Sponsor

    Denver, CO
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    Jul 18, 2013
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    2,610
    Same here...I use 10W30 (not synthetic). I do add a zinc additive (zddp). I have considered using Shell Rotella that already has the zinc in it (for diesel engines I believe)...
     
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  4. May 7, 2019
    73 cj5

    73 cj5 Not ready for the junkyard yet

    Mississippi
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    Jan 10, 2014
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    1,098
    Your typical engine oil has detergent in it already. I wouldn’t do a “flush” on a particularly dirty engine.
     
  5. May 7, 2019
    colojeepguy

    colojeepguy Colorado Springs 2019 Sponsor

    At the foot of...
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    I use 10W40 dino oil.
     
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  6. May 7, 2019
    Focker

    Focker That's what I do, I know things and I fix stuff. Staff Member 2019 Sponsor

    Tri-Cities WA
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  7. May 7, 2019
    Norcal69

    Norcal69 Out of the box thinker 2020 Sponsor 2019 Sponsor

    Northern California
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    Sep 6, 2014
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    Valvoline™ VR1 Racing Motor Oil : Product Catalog - Valvoline
    This is what I use in 10-30 form. In California it is not street legal because it still contains Zinc and other "dangerous" materials like ZD DP.
    This oil will not restore your worn out camshaft or lifters and you will never feel any HP increases..... It is not recommended for vehicles with catalytic converters.
    • High zinc/phosphorus for anti-wear protection, including push-rod & flat tappet applications
    • Formulated to increase horsepower
    • Enhanced anti-foam system protects engine during extreme stress
    • Recommended for engines burning gasoline and full or partial alcohol fuels
    Valvoline VR1 contains Zinc@1400ppm and phosphorus @1300ppm
    Shell Rotella T contains Zinc@1200ppm and phosphorus @1100ppm
     
    Last edited: May 7, 2019
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  8. May 7, 2019
    dane71

    dane71 Member 2019 Sponsor

    USA
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    May 11, 2017
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    142
    I was gonna say go with the VR1 as well. I thought that because it's a "race" oil it wouldn't have any detergents to prevent sludge build up, but Valvoline themselves in the product question section on amazon say it's a full detergent oil.
    I'm running rotella but with the changing api ratings who knows how well it still protects, I've also heard some debate on increasing detergent (or something?) levels cleaning off ZDDP but I don't know much.
     
  9. May 7, 2019
    jeep2003

    jeep2003 Well-Known Member

    Vestal NY
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    I usually put in half cheapo 10-30 and half vr1 either 10-30 or 20w50 because i always have a stash for my other cars. Every few years it seems the autoparts stores have a blowout sale on the vr1 a few years ago it was $1. /qt. I went all around and grabbed what i could. The guys on the porsche forum are always all over it like a treasure hunt. One guy found like 60 quarts had them all lined up on his dining room table lol The DELO oil at walmart is suposed to be good too and its cheap. I used it once
     
  10. May 7, 2019
    Renegade ll

    Renegade ll Member

    Thayne Wyoming
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    Feb 17, 2013
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    406
    I used Driven break in oil for a freshly rebuilt 225 V6. Then I went with Driven HR 10w 30 with zddp.
     
  11. May 7, 2019
    Tom_Hartz

    Tom_Hartz Member 2020 Sponsor 2019 Sponsor

    North Carolina
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    This is what I run.
     
  12. May 8, 2019
    Vanguard

    Vanguard Chief Cook and Bottlewasher Staff Member

    Brighton, MI USA
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    Walmart Syntec. 10W30 or 10W40. Unless you have a Rural King close by, then I like Harvest King Synthetic.
     
  13. May 8, 2019
    sterlclan

    sterlclan Member

    exploring the...
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    15/40 diesel oil in everything here.
     
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  14. May 8, 2019
    kenb

    kenb Member

    Detroit
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    I wonder if the high zinc oil is really required in these. It seems about half of people say you need it and the other half say it's only required on high performance engines with heavier valve spring pressure. I'm always wondering also about my Wrangler 4.0L I6 engine and zinc.
    By limiting yourself to high zinc oil you end up needing expensive specialty oil or oil not intended for spark ignition engines. From everything I've read it sounds like mixing zinc additives into the oil can easily do more harm than good.
     
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  15. May 8, 2019
    Mcruff

    Mcruff Earlycj5 Machinist

    Albertville, AL
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    If you dig around you find that the only time it is really recommended is during engine break-in with a new cam and lifters. Quaker state Defy had a higher zddp than most. I think it’s Quaker state high mileage oil now. It’s conventional oil.
     
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  16. May 9, 2019
    Beach66Bum

    Beach66Bum ‘66 Tux 2020 Sponsor 2019 Sponsor

    Big Island on...
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    Quaker State 10W-30 higher mileage engine oil is what I used also.
     
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  17. May 9, 2019
    47v6

    47v6 junk wrecker! 2020 Sponsor

    Washington DC.
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    My engine is garbage and makes valve train noise. It seems to get quieter when I dump in some STP snake oil. Other than that I change the oil one a year that by that time is mostly gasoline with the cheapest 10W40 conventional oil. I do use a WIX filter, so that makes it all ok?
     
  18. May 10, 2019
    Rich M.

    Rich M. Shoe pusher

    Maryland
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    Mar 23, 2008
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    Rotella 15w-40 here. Because I buy it in 5 gal pails at tsc on sale for my trucks and there's always leftover.
     
  19. May 10, 2019
    GeoffreyL

    GeoffreyL Well-Known Member

    moorestown, nj
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    Aug 1, 2012
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    10-30 or striaght 30 and Walmart house brand conventional. We use Walmart oil in my dads diesel suburban and it just turned 500k a month ago.
     

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