LBZ: breakin Oil ?

ku 808

Member
Sep 6, 2010
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What Oil you guys using to breakin a new motor my friend just got a new motor from Socal they suggest Torco I think is what he told me?
 

hondarider552

Getting faster
May 28, 2008
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34
Arizona
I used the cheapest 15-40 I could find, usually Rotella. I ran that oil for about 5 minutes after it got to operating temp, and then changed it.
 

JoshH

Daggum farm truck
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Feb 14, 2007
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Texas!!!
The zinc isn't really as necessary on our engines since we have roller lifters. It is more critical on a flat tappet style lifter like an old small block or a Cummins. Without a zinc additive it is easy to flatten the lobes on the cam without the extra cushioning it provides. It's still not a bad idea, but I've never really worried too much about it on a Duramax.
 

x MadMAX DIESEL

<<<< No Horsepower
Dec 30, 2008
7,535
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Lexington, Ky
I don't plan on using it this time. But when I first built it with a new cam I used alittle bottle. Most places won't have it, parts store wise, I just got lucky. I used Lucas I believe.
 

Muff

Just Learning
Oct 7, 2013
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Butler, Pa
The zinc isn't really as necessary on our engines since we have roller lifters. It is more critical on a flat tappet style lifter like an old small block or a Cummins. Without a zinc additive it is easy to flatten the lobes on the cam without the extra cushioning it provides. It's still not a bad idea, but I've never really worried too much about it on a Duramax.

X2 zinc additive mainly for non roller applications. Won't hurt to put it in but isn't really necessary.
 

durallymax

New member
Apr 26, 2008
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Under The Hood
x2 on joe gibbs although to break in the cam on my sisters Jetta I didn't have any around so I just used non detergent straight 30w and a bottle of lucas zinc additive because its what I could find. The PD TDI's are SOHC with flat lifters.