View Full Version : WHAT OIL TO USE
JEFF69Z28
09-15-2009, 05:16 AM
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.
russ67chevelle
09-15-2009, 06:17 AM
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)
chevyfireball
09-15-2009, 12:36 PM
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.
FullTimeRacing
09-15-2009, 02:11 PM
10w30 full syn pennsoil
ARUSSELL
09-15-2009, 02:46 PM
20/50 is a safe option, you do give up a few hp
MEMRACING62
09-15-2009, 03:56 PM
15/40 ROTELLA
bowhay
09-15-2009, 04:53 PM
X2 on the rotela T 15/40,
15/40 schaeffers synthetic
hammertime
09-15-2009, 06:27 PM
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.
johnracer
09-15-2009, 06:37 PM
10w30 Mobile 1 or Valvoline full synthetic.....
rob41willys
09-15-2009, 09:00 PM
20/50 Brad Penn for me
cepx111
09-15-2009, 09:57 PM
20/50 castrol
TS1955
09-16-2009, 03:29 AM
I use 20W-50 Valvoline synthetic.
TS1955
TheRabbit
09-16-2009, 05:02 AM
10 / 30 Mobile synthetic (Dry Sump) no problems. I like thinner oils for more HP.
et7333
09-18-2009, 08:25 AM
10-30 VRI
OneBadGMC
09-18-2009, 08:49 AM
20W-50 Valvoline VR1
Scooterz
09-18-2009, 12:37 PM
20/50 Redline/ or 20/50 Royal Purple....
TheYellaBrick
09-18-2009, 01:17 PM
20/50 Redline/ or 20/50 Royal Purple....
DITTO....
etchison
09-18-2009, 06:58 PM
brad penn (green oil) 10-30 works great with alky
Dahlton
09-22-2009, 01:41 AM
have always used QuakerState 20/50 racing mineral..
txhunter69
09-22-2009, 01:12 PM
well i knoe alot of cirle track guys that put there motors through hell and they all use rotella 15/40 and have no problem they say its better because of what it has init vs. what a normal gasoline engine oil has i think it has somethin to do with zinc and teflon gives it a better caoting
I972Nova
09-22-2009, 01:33 PM
Brad Penn is loaded with Zinc as well. Thats all I use in the racecars is BradPenn 20/50 and MobilOne full syn in my other vehicles... The green oil is great for gas or alky it doesnt get contaminated as easy and its the slipperiest stuff I have ever used.
kod99
09-23-2009, 07:32 PM
I ran Pennzoil 25/50 Racing Oil this season. Good oil pressure (80 psi cold and 35 psi hot at 1000 RPM). I run Alcohol so I change after very weekend and, of course it is milky when I change it. The heat stayed down (150 in the box and 185 at the end of the run). I will stay with this oil next years as it's reasonably priced at NAPA.
pistonpopper
09-24-2009, 04:17 PM
rotella 15-40 with gm eos, 377 sbc, .0025 rods and mains. 7200 rpm, oil change every second w/end no abnormal wear. teardown every second year :D
rob41willys
09-27-2009, 09:33 PM
Unless you have some old stock Rotella T oil it doesn't have all the zinc in it anymore. If you run flat tappets it is a must that you use something with the ZDDP in it or use an addative.
MEMRACING62
09-28-2009, 03:49 AM
Unless you have some old stock Rotella T oil it doesn't have all the zinc in it anymore. If you run flat tappets it is a must that you use something with the ZDDP in it or use an addative. did they reduce it or eliminate it (zddp)
hammertime
09-28-2009, 05:05 AM
I ran Pennzoil 25/50 Racing Oil this season. Good oil pressure (80 psi cold and 35 psi hot at 1000 RPM). I run Alcohol so I change after very weekend and, of course it is milky when I change it. The heat stayed down (150 in the box and 185 at the end of the run). I will stay with this oil next years as it's reasonably priced at NAPA.
you bought into a myth of needing to change oil weekly on a alky car :shock: and if its milky you need to fix something :wink:
Mills588
10-02-2009, 08:06 PM
All my 588ci will ever see:
http://www.amsoil.com/storefront/rd50.aspx
chpseat987
10-03-2009, 08:44 AM
20W-50 Valvoline VR1 racing formula. Never had a problem always stayed clean.
drolds69
10-11-2009, 06:50 AM
i have a 496 bbc 200 shot i use brad penn 20w 50 the car weighs 3000lbs runs 9.75 all day long