What did you do to your NNBS GMT900 Tahoe/Yukon Today?

[R3cord303]

Does anybody have little specs of ‘glitter’ in their catch can? This is the first real oil change on this engine so I’m not too worried but I may dump the contents of the can into an oil sample container and then take a sample of engine oil and send both off to Blackstone for oil analysis.

edit: I should also say that the can is only up to this level in the can after a few thousand miles

 

[trailblazer]

I don’t see any glitter in mine. What I get is about 4-6oz of a caramel coloured emulsion when I check it once every few thousand miles. I disabled DoD via software too.


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[Tonyrodz]

Does anybody have little specs of ‘glitter’ in their catch can? This is the first real oil change on this engine so I’m not too worried but I may dump the contents of the can into an oil sample container and then take a sample of engine oil and send both off to Blackstone for oil analysis.

edit: I should also say that the can is only up to this level in the can after a few thousand miles
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If possible, you should try to cut open your oil filter and see what's in there.

 

[R3cord303]

If possible, you should try to cut open your oil filter and see what's in there.

I will. My thinking is that it’s flakes from the new rockers breaking in. I don’t see how bearing material could get into the pcv

 

[Doubeleive]

I will. My thinking is that it’s flakes from the new rockers breaking in. I don’t see how bearing material could get into the pcv

Doesn't the oil run thru the motor and then the fumes are caught in the Catchcan?, I would think therefore whatever material the oil captures would then also enter the pcv

 

[CHOO CHOO]

Finally fixed the rear defrost tab with frostfighter.

 

[R3cord303]

Doesn't the oil run thru the motor and then the fumes are caught in the Catchcan?, I would think therefore whatever material the oil captures would then also enter the pcv

yeah but the super high surface tension of the oil would hold onto the metal- not allowing it to get sucked up by the pcv like it would the vapors. The fumes seem to be pretty close to 50/50 fuel/oil mix

 

[Doubeleive]

yeah but the super high surface tension of the oil would hold onto the metal- not allowing it to get sucked up by the pcv like it would the vapors. The fumes seem to be pretty close to 50/50 fuel/oil mix

Sounds like some scientific mumbo jumbo oil marketing, unless it's captured by the oil filter I am certain any contaminants would be found throughout the engine, just like coolant when a head gasket blows. do you see the same thing on the oil dipstick?, what did you put in the catch can as a filter material?

 

[R3cord303]

Sounds like some scientific mumbo jumbo oil marketing, unless it's captured by the oil filter I am certain any contaminants would be found throughout the engine, just like coolant when a head gasket blows. do you see the same thing on the oil dipstick?, what did you put in the catch can as a filter material?

Nothing on the dipstick except very clean looking oil! My idea for catch can filter material didn’t go for shit. :c the amount of flakes in the catch can was very low however

 

[gooffeyguy]

It may just be residue that was in the catch can to begin with

2001 Yukon SLT
2012 Yukon Denali XL
2011 Yukon Denali RIP 5/20/18