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Old 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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Old 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.

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Old 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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Old 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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Old 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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Old 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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Old 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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Old 12-15-2006, 11:01 PM
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This link may help
New cam break in info
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Old 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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Old 12-16-2006, 07:37 AM
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Quote:
Originally Posted by ap72
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.




thats funny right there I don't care who you are !


Plus I feel the same about penzoil





Mustangsaly
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Old 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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Old 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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Old 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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