2009 Silverado, 2956mi, PYB 5w30 SN, OLM 62%

[Turk]

Originally Posted By: dave2009
I have PP in it now with PureOne filter the last several runs. Never have to add oil or coolant. Runs perfectly, just worried about the lead.


Sounds good + 5-10 second warm-ups then re-check later.

 

[chubbs1]

This truck is still breaking in, give it a little more time before you start worrying.

 

[electrolover]

Originally Posted By: Johnny
I personally would stick with the 5W-30 no matter which oil you decide to use. I don't know that the PP would bring the numbers down, but you could try. I've seen V-8 GM's show high lead readings up to 60K before they start coming down.


i think your right! every builder i have talked to says gm is kinda loose on the crank balancing tolerances. i bet it will clean up over time.

 

[zulu]

Originally Posted By: electrolover
Originally Posted By: Johnny
I personally would stick with the 5W-30 no matter which oil you decide to use. I don't know that the PP would bring the numbers down, but you could try. I've seen V-8 GM's show high lead readings up to 60K before they start coming down.


i think your right! every builder i have talked to says gm is kinda loose on the crank balancing tolerances. i bet it will clean up over time.




I'll second that. Our 09 has an ugly knock on startup attributed to crank wobble until it gets warm. GM says it's normal