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Old 06-04-2008, 11:04 AM
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Brad Penn® Penn-grade 1®

Have any of you guys ever tried this oil? It seems to like the ideal oil to use during the break in procedure. I was thinking of using some, but I have already primed my engine with Castrol 20/50. I also have a bottle of Cranes engine break in additive. Should I just go with the Castrol/Crane additive mix or drain and switch to the Penn break in oil?

http://www.bradpennracing.com/Products/BIO30.html

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Last edited by boss350; 06-04-2008 at 11:06 AM. Reason: forgot link
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Old 06-04-2008, 11:11 AM
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I have used that break in oil in three oval track motors that I built for this season, every one of them sees 8000 RPM occasionally and 7200 normally.

I have seen no ill effects from the use of that oil for break in.

On the other hand I have used comps break in fluid for a street 383 chevy that I built mixed with some napa 10w30 that had a solid cam, no ill effects on that as well.

I also used it when I broke in a new cam in an ice racer and after that one snapped a rod I pulled the cam and it looked like brand new.
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Old 06-04-2008, 11:32 AM
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Yes I have try them and they are excellent for breakin...
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Old 06-04-2008, 12:52 PM
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It's no doubt good oil. Break-in and after break in. What application, cam etc in your motor?
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Old 06-05-2008, 12:32 AM
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Thanks for the response. It's just a stock G.M. 350 crate engine. Do you think 20/50 is ok for break in? I see alot of 30 weights being used and printed on the valve covers. Is this because of the type of bearings/clearances being used?
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Old 06-05-2008, 07:30 AM
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We used the Brad Penn for yeares until we found thay had lowered the zinc to 1400 PPM and we changed over to the http://www.cen-pe-co.com/ 20/50 which has 2300 PPM of zinc and high in phosephate, And their diesel 15/40 has 1582 PPM of zinc.

We build alot of circle track engines and some street performance engines when there is time extra time and so far no problems with the CENPECO oils. and cam break ins.
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Old 06-05-2008, 08:53 AM
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While the brad penn is good oil and seems to be highly recommended for brek-in etc. I think since you have already used the castrol 20/50 and the break in additive you will be fine. I am using Valvoline racing 20/50 and comp cams break in additive for my fresh ford 289.
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