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12-14-2006, 07:43 PM
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break in oil
would 5w30 be best for break in on a performance built motor?
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12-14-2006, 08:19 PM
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DO NOT use regular oil, the govt. has taken a lot of additives out of it and it will wipe your cam out on break in, use either shell rotella or vavoline conventional race oil, those still have zinc and other additives in them, and i always use 30wt for my break ins.
Last edited by kuhn-77; 12-14-2006 at 08:37 PM.
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12-14-2006, 08:21 PM
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Nope.
Most modern gasoline multi-grades (ie 5w30, 10w30) don't have the right additive package containing zinc and /or phosphorous. Break 'Em in Easy ZDDP Additive Both articles recommend using a diesel-engine grade 15w40 (Shell Rotella T for example) and some GM "EOS" (Engine Oil Supplement). That's exactly what's in my 454 right now ... and I'm getting anxious to fire it up!
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12-14-2006, 08:26 PM
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5/30 should be OK. I just have this thing that I've used 10/30 Valvoline for ever and never had any problems so I stick with it.
Modern rings with the correct bore finish are not much of a concern. The cam is the major break in concern if it is not a roller. If you have a flat tappet cam make sure that you are using an oil that has zinc in it. 10/30 Valvoline VR1 or diesel oil Add a can of GM E.O.S. (engine oil suppliment)for break in. Joe Gibbs Lubricants has a break in oil now also. To check out some oil stuff look at this http://www.atis.net/oil_faq.html
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12-14-2006, 08:41 PM
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I go with Valvoline straight 30w with EOS from GM- I always run valoline in my cars and Rotella Synthetic Diesle in my bikes. And I will NEVER touch penzoil- after seeing the crap that build up from it I wouldn't put it in my nieghbor's lawnmower.
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12-15-2006, 04:32 AM
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ive always had the best luck with pennzoil, anything else it burns oil, pennzoil was the cleanest also i had castrol for about 30,000 miles and it stained the motor black inside. ill probably use pennzoil, would the longlife diesel oil be what i use for break in? or straight weight because all straight weight pennzoil still have the Z7 additive. and could anyone tell me what is in the Z7 additive package?
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12-15-2006, 05:09 AM
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break in oil
You might want to check out the Melling website it has a real good comparison on oils for break in.
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12-15-2006, 11:01 PM
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This link may help
New cam break in info
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12-15-2006, 11:08 PM
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When I put my motor together, I used lucas and 20/50 valvoline racin oil.
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12-16-2006, 07:37 AM
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Quote:
thats funny right there I don't care who you are ! Plus I feel the same about penzoil Mustangsaly
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12-16-2006, 09:02 AM
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I'd suggest readking that other thread.
Rotella T is now "CJ4" as of July 06.  I've gotta check to see what the stuff I put in was... Maybe I'll order a skid of "CI4" oil and stockpile it.
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12-16-2006, 09:11 AM
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does all diesel oil brands have the zinc additive? id like to know if pennzoil does.
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12-16-2006, 09:16 AM
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once the cam is broken in will there be the need for the additive because im using pennzoil on a truck ive run 12 years pennzoil every 3000?
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