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Discussion Starter #1
Here are the specs for this one.
2010.
Initial oil change at about 1657 miles (remove factory oil)
Refilled with Valvoline 5W-30 Conventional oil (dino). Used AC DELCO filter.
Drove for 5154 miles.
OLM indicated 50% oil life left.

I drained oil- and goofed-- didnt have the oil sample container nearby- and ran to get it-- when I returned- oil was done draining. I had to get the oil sample from the dirty drain pan.
I let them know when I sent in my sample.
TBN is 2. Oil still has life left.
No fuel in oil-
They recommend I try 6000 miles next time--- as I requested and extended oil life use analysis.
Im tempted to try 35 -40% OLM.

My driving consists of city and highway every day- with Highway being mostly Los Angeles type rush hour driving.
But I do drive to maximize MPG. And consistantly get 18-19 MPG combined.
If you cant see the file- download the attachment- then you can zoom in on it
 

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Discussion Starter #4
the thing to note-- is that the OLM said oil was at 50% life--- yet it only has a TBN of 2.

Could this TBN hold out for another 50%...

Ive read though that the TBN decline is not linear...
so well see on subsequent oil changes.
 

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Narg said:
Good to show that normal dino oil is still as good as it always has been.
But maybe not good enough for this application :-\.

I would hope to see better wear #s for our engines once they are past the...shedding stage.
 

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Discussion Starter #6
I wonder how the engine/oil does on a Lambda DI- that is driven mostly highway and sees very little street.

As I do alot of stop and go in LA traffic.
 
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