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Old 05-15-2012, 08:35 PM
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Default Oil?

What kind of oil is everyone running? I know some people choose to run different oil just trying to decide what is best!

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Old 05-15-2012, 08:46 PM
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Mobil 1 - 5w-30
Old 05-15-2012, 08:54 PM
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Does anyone use swepco oil? A couple people have told me to try that.
Old 05-15-2012, 10:17 PM
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You will get a lot of unsubstantiated opinion based solely on marketing here.

http://www.bobistheoilguy.com/forums/ubbthreads.php
They have a section specifically for people to post the wear metal content of drained oil, as in actual measurement of how an oil is working in a particular engine.
Old 05-16-2012, 10:14 AM
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Old 05-16-2012, 12:05 PM
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I've started to look at the Joe Gibbs stuff. Currently on castor oil GTX with just under 1000 miles on the motor.
Old 05-16-2012, 12:19 PM
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stock engine?id say what gm calls for mobil 1 but if you wana pay for that stuff its your choice theres better oil for less money,i run brad penn 20w50 racing oil of course i have a 383 also.
Old 05-16-2012, 12:48 PM
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Originally Posted by blackls1ta00
stock engine?id say what gm calls for mobil 1 but if you wana pay for that stuff its your choice theres better oil for less money,i run brad penn 20w50 racing oil of course i have a 383 also.
I agree i am also using same oil here, weather temp is like 105 summer and maybe 40s in winter.
Old 05-16-2012, 12:56 PM
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Castor gtx. Full synthetic. Only oiil ive ever used and am still using it in my new motor
Old 05-16-2012, 04:01 PM
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Its a stock bottom end with 50,000 miles prc2.5 ls6 heads, P and P oil, pump ms3 cam. Basically everything but a built bottom end. Iv also heard brad penn oil is good. Reason for asking is since reading alot about most companies oil not being so "synthetic" anymore im trying to decide which route to take.
Old 05-16-2012, 05:30 PM
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mobil 0w-40
Old 05-16-2012, 06:29 PM
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Like I said go to the link I provided and see what others are seeing for wear metal content in used oil. We have a test for used oil but so very few seem to care atall about it. They prefer to base decisions on marketing like those who "believe" in M1 because M1 struck a deal with GM.

The LT1 Vette was the first vehicle to get the M1 oil fill cap and the actual results were consistently high iron wear.
Old 05-16-2012, 06:39 PM
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i always use a blend in everything. synthetic oil i feel makes somethings wear faster and some things not at all. like i pulled apart a ls1 apart with 35k on it that had RP its whole life and it still had cross hairs on the cylinder walls. which isnt ness. bad but it literally never even broke-in
Old 05-16-2012, 07:11 PM
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Originally Posted by bwkmaro
i always use a blend in everything. synthetic oil i feel makes somethings wear faster and some things not at all. like i pulled apart a ls1 apart with 35k on it that had RP its whole life and it still had cross hairs on the cylinder walls. which isnt ness. bad but it literally never even broke-in

Seems you are stuck in the 70s or something, an LT1 fed bulk dino by the police department with 200K still has crosshatch.
Old 05-16-2012, 07:23 PM
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I'm a member over at the corvette forum. Here's a sticky with lots of good info on different oils. It's for flat tapped cams, but there is great info that will show you what oil will provide less wear on engine parts.
http://forums.corvetteforum.com/c3-t...ppet-oils.html
If you want added protection, go with Mobil 1 15W-50 or Castrol Edge 5W-50. These are made with a higher Zinc and phosphorus contant, which offers more protection for parts. I know these are roller engines, "they don't need it" blah, blah, blah, but the extra protection is always great for any engine. I use synthetic because I do notice a difference between it and conventional oil, and also because I like my engine to be nice and clean during a tear down. I myself, am running Royal Purple and my engine just hit 199,XXX miles on my '00 Z28. Brad Penn is suppose to be really good oil.
Old 05-16-2012, 08:11 PM
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haha no im just cheap
Old 05-16-2012, 08:14 PM
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M1 0w40.
Old 05-16-2012, 08:20 PM
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10w40 in mine, after a few hours of drive time oil pressure was below 40 on highway with 5w30. With 10w40 it stays about 52 psi highway cruising.
Old 05-16-2012, 08:25 PM
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RP 5w-30 HPS
Old 05-16-2012, 09:25 PM
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Plain old Castrol 10w-30.
Regular oil & filter changes work for me.



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