Did some UoA a while back.
On my 2003 Trailblazer- 4200 Inline 6.
I always use the OLM until the light comes as I only have a light and no % is displayed. But my oil change intervals were always in the 10,000 mile range.
the 4200 takes 7 quarts with filter change.
I always measured what came out- and I always removed about 6.5 quarts. never burned oil.
I did the analysis at 2 important points- soon after 100K... (104K) and before it hit 150K (146K).
I still have the vehicle- though my daily driver is now my 2010 Traverse (Ive included an UOA on another thread for the Traverse)
The vehicle still runs great.
Its most recent California Smog check- it passed with flying colors (if that means anything)
The analysis pointed to possible coolant loss ....
none has occured- coolant has not dropped in level.
As for silicon- I did find out why that number was high...
Turns out that one of the air filter tubes- was not seated right- I was checking stuff under the hood -put a little pressure on one of the parts as I looked at something else and heard a pop--- that pop was parts seating correctly...
So 'dirty' air was bypassing the filter.
The vehicle now has 154,000
On my 2003 Trailblazer- 4200 Inline 6.
I always use the OLM until the light comes as I only have a light and no % is displayed. But my oil change intervals were always in the 10,000 mile range.
the 4200 takes 7 quarts with filter change.
I always measured what came out- and I always removed about 6.5 quarts. never burned oil.
I did the analysis at 2 important points- soon after 100K... (104K) and before it hit 150K (146K).
I still have the vehicle- though my daily driver is now my 2010 Traverse (Ive included an UOA on another thread for the Traverse)
The vehicle still runs great.
Its most recent California Smog check- it passed with flying colors (if that means anything)
The analysis pointed to possible coolant loss ....
none has occured- coolant has not dropped in level.
As for silicon- I did find out why that number was high...
Turns out that one of the air filter tubes- was not seated right- I was checking stuff under the hood -put a little pressure on one of the parts as I looked at something else and heard a pop--- that pop was parts seating correctly...
So 'dirty' air was bypassing the filter.
The vehicle now has 154,000
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