WHAT OIL TO USE

Old 09-15-2009, 06:16 AM
  #1  
JEFF69Z28
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Default 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.
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Old 09-15-2009, 07:17 AM
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russ67chevelle
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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)
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Old 09-15-2009, 01:36 PM
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chevyfireball
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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.
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Old 09-15-2009, 03:11 PM
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FullTimeRacing
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10w30 full syn pennsoil
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Old 09-15-2009, 03:46 PM
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ARUSSELL
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20/50 is a safe option, you do give up a few hp
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Old 09-15-2009, 04:56 PM
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MEMRACING62
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15/40 ROTELLA
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Old 09-15-2009, 05:53 PM
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bowhay
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X2 on the rotela T 15/40,
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Old 09-15-2009, 06:30 PM
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ejm
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15/40 schaeffers synthetic
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Old 09-15-2009, 07:27 PM
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hammertime
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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.
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Old 09-15-2009, 07:37 PM
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johnracer
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10w30 Mobile 1 or Valvoline full synthetic.....
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