UOA: 2004 GMC 2500HD 6.0 M1 5w-40

[Mighty HD]

I'm a bit confused as to why the silicon is still so high. I have checked over and over the air filteration. I checked the factory filter, replaced it with a PureOne filter, etc. It seems quite high.

After I run this round of M1, I'm going to dump regular dino Castrol/Havoline in it....Maybe It'll go down.

OR it's the M1 eating my silicone gaskets..

 

[TR3-2001SE]

I think you have normal break-in going on. Relax and forget about the silicon. Excellent analysis by the way.

 

[Gary Allan]

Why is the TBN so hammered

You've only had this in service for 3.5 months and 2400 miles. My TBN, in a short trip environment over 13months and 9k miles, was at par with it..slightly better even. The TBN started at around 12.

I would have expected this after 1 year in service

 

[Mighty HD]

I have no idea ....

I was hoping some of you guys could give me some insight.

 

[Al]

Let me be the first to tell you that you are changing oil way to often. Leave this oil in for at least 5 or 6 K miles. 3.3 TBN is still a lot of TBN left

 

[toyota62]

6.0L gas new engine?I know 5.3L v8,7.4L v8,5.7L v8,6.2L diesel v8,6.5L turbo diesel v8 and new 6.6L duramax common rail diesel.Haven't heard about this 6.0L engine.interesting.
Not a bad UOA.Hope next one will improve.
Cheers.
bob.

 

[toneloc12345]

new vortec engines have been out since '99. 4.8l 5.3l 6.0L 8.1L

This is in the trucks

 

[Mighty HD]

The engines have been out for a few years now.

Yes I know I can run longer than 2k, but I choose not to.

 

[Amkeer]

Your not helping your leak situation by doing frequent oil changes.

 

[Mighty HD]

let it leak---its got a warranty that GM has to pay for to fix it.

They should have produced a non leaking motor, regardless of howmuch I changed the oil .