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Thread: WHAT OIL TO USE

  1. #1
    Senior Member DYNO OPERATOR
    Join Date
    Apr 2008
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    496

    WHAT OIL TO USE

    WHAT TYPE OF OIL DOES EVERYONE USE.DOES IT HAVE TO BE STRAIGHT WEIGHT OR CAN I USE 10W30 FOR MY RACE CAR VERSES 15W40, IM CONFUSED ABOUT THIS.

  2. #2
    Senior Member EXPERT BUILDER
    Join Date
    Jan 2005
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    336
    MAINLY OIL WEIGHTS ARE DEPENDANT ON HOW MUCH BEARING CLEARANCE U HAVE IN RODS AND MAINS...IF IT IS A STOCK REBUILD WITH STOCK CLEARANCES,USE STOCK RECOMMENDED WEIGHT OIL.IF IT IS A LOOSE MOTOR SET UP FOR RACING USE THICKER OIL LIKE 20/50


    BRAD PENN IS KNOWN FOR ITS SLIPPERYNESS WHEN CONTAMINATED WITH GASOLINE(GREAT NEWS FOR NITROUS USERS)

  3. #3
    Senior Member MASTER BUILDER
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    Dec 2005
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    Napier, New Zealand
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    230
    I used to use 10w/30 but it was so thin my dry sump pump was leaking around the front seal.
    I now use 25w/50 race oil. Some say I'll lose a little hp but I don't seem to.
    It Ain't Over Til Its NOVA - 634ci of S*#t Your Pants!

  4. #4
    Senior Member DYNO OPERATOR
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    Mar 2008
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    New Orleans,La
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    10w30 full syn pennsoil
    Full Time Racing,WASTED $$ division

    http://www.racingjunk.com/profile/281924

    Be a Fan of Full Time Racing on facebook http://www.facebook.com/pages/FULL-T...G/177402183154

  5. #5
    20/50 is a safe option, you do give up a few hp

  6. #6
    Senior Member RACING JUNKIE
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    orland pk il
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    15/40 ROTELLA

  7. #7
    Senior Member EXPERT BUILDER
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    Nov 2008
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    X2 on the rotela T 15/40,

  8. #8
    Senior Member SENIOR BUILDER
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    Nov 2007
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    indiana
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    15/40 schaeffers synthetic
    if something goes wrong there is always the cooler!!!

  9. #9
    Senior Member RACING JUNKIE
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    May 2003
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    Coldwater, MI
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    2,998
    I've ran 4 different oils this year, on alky injection with a primer plus

    15/40 shell stuff looked good going in .. didnt look so hot coming out
    20/50 & 10/30 vr1 -- little to no difference other then 5 hundreths on the track

    and whats in there now is 5w/40 syn castrol, a buddy of mine did some r&d on this stuff, and oil temp is very good under hard use. So far so good.
    David Lanning
    IHRA NHRA 387B

    Fleenor Racing Transmission
    419-280-1406
    Lanning Electric
    Complete Drag Car Wiring
    APD Race Engines
    www.apdracing.com

  10. #10
    Senior Member DYNO OPERATOR
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    Aug 2005
    Location
    Rifle Colorado
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    585
    10w30 Mobile 1 or Valvoline full synthetic.....


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