UOA BMW 4.4L V8 N63TU

[jackliu]

Can someone help me read this? I recently have an engine replaced, and this OUA is from 500-6500KM (6000KM) the first 500KM break in I did not do UOA, they told me that the universal average is based on 9000KM for my engine, so me being at 6000KM does that change how I should read it? anything I should be worried about? aluminum, copper, and boron seem a bit high, though the engine could still be breaking in? anything I should be worried about? any thoughts? usually what KMs does the metal wear normalize? as well can someone provide some guideline as to what material is usually from what part of the engine?

 

[PimTac]

Your engine is breaking in nicely. These numbers are quite low considering this is a new/rebuilt engine. You have no worries here. The copper will trend down.

These would be excellent numbers on a broken in engine let alone one that is in the process of.

 

[MCompact]

Agreed; I see no issues.

 

[jackliu]

Thx guys, I remember seeing a chart somewhere that tells you which metal is usually what part in the engine? anyone can point me to right direction?

 

[PimTac]

https://www.bobistheoilguy.com/used-oil-analysis-how-to-decide-what-is-normal/



The main reason to do a uoa is to determine if the oil is still serviceable. As for wear metals, that takes a long term trend to determine anything.

 

[1JZ_E46]

Looks good. What oil?

 

[jackliu]

Originally Posted by 1JZ_E46
Looks good. What oil?


Total Quartz Ineo Long Life 5W30, but after this oil change I have switched to Motul Xcess 8100 5W40 for better protection since I drive the car pretty hard sometimes

 

[NuttCase]

No issues with the boron. It's an additive, not a wear metal. It's used as a catalyst-friendly anti-wear additive in the form of boron succinimide.