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Break in oil post rebuild


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Hey guys, I just wanted to take a quick poll here and see if there are any specific break in oils that yall have used after rebuilding your engine, I had a few in mind but I would like more opinions!

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My thinking is you are looking for the least amount of detergents. You need percentages in the teens for both zinc and phosphorus. The phosphorus is the component that provides the early protection in the hardening process.

 

Everyone has their favorite brand name. Some prefer the Brad Penn Kendall green oil, some like the fancy names with the dyes to color the product, and some like just plain old run of the mill, brand name, Penzoil , mineral based racing oils,

 

The key is the percentages of zinc and importantly  phosphorus content.

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AMSOIL also has a really good break in oil that I have used in the past on other vehicles.  Like said ^above^ the ZDDP additives (zinc and phosphorus) are the key ingredient for initial break in.

Once everybody has debated the best break in oil, you can then start a new debate on the best break in methods lol.

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Thanks guys y'all have been helpful.

AMSOIL also has a really good break in oil that I have used in the past on other vehicles.  Like said ^above^ the ZDDP additives (zinc and phosphorus) are the key ingredient for initial break in.

Once everybody has debated the best break in oil, you can then start a new debate on the best break in methods lol.

Lol and what is your preferred method impulse
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Whatever name brand oil you want with some break in additive I used castrol with Lucas in the mj and wrangler wrangler has 150k since rebuild strong as ever! People way over think this topic, but the best thing to do is listen to your engine builder!

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Thanks guys y'all have been helpful.

AMSOIL also has a really good break in oil that I have used in the past on other vehicles.  Like said ^above^ the ZDDP additives (zinc and phosphorus) are the key ingredient for initial break in.

Once everybody has debated the best break in oil, you can then start a new debate on the best break in methods lol.

Lol and what is your preferred method impulse

 

Well, on the last two engines I built, I did an initial break in start, changed the oil, and drove them to the dyno.  Both of those engines to my knowledge are still running strong, one for over 7 years now, and is semi daily driven.  Many people think dyno break ins are stupid and prefer the old fashioned method of driving nice for a couple thousand miles.  Hence my comment about debating on the best method lol.

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Thanks guys y'all have been helpful.

AMSOIL also has a really good break in oil that I have used in the past on other vehicles. Like said ^above^ the ZDDP additives (zinc and phosphorus) are the key ingredient for initial break in.

Once everybody has debated the best break in oil, you can then start a new debate on the best break in methods lol.

Lol and what is your preferred method impulse

Well, on the last two engines I built, I did an initial break in start, changed the oil, and drove them to the dyno. Both of those engines to my knowledge are still running strong, one for over 7 years now, and is semi daily driven. Many people think dyno break ins are stupid and prefer the old fashioned method of driving nice for a couple thousand miles. Hence my comment about debating on the best method lol.
Haha gotcha. Yeah I think I'll avoid the Dyno myself lol
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