Reading oil samples

[DDlighttruck]

(12-28-2019 )uncleal13 Wrote:  

(12-25-2019 )DDlighttruck Wrote:  

(12-25-2019 )Rawze Wrote:  the main one of them all is always the iron (Fe) number.

Take the mileage of the oil , in your case, 20,000 miles, then divide it by 1000.

20,000 / 1000 = 20

This number (20)...

If your iron is higher than your (mileage/1000), then you likely have excessive wear somewhere. if it is less, then your oil is doing a decent job.

Your iron shows 16. This is less than 20 ... that is a good sign.

Which one is soot?

I guess resample next service and then compare again?

ST = 44, was 36 last time.
This lab uses a particle count number, not a percentage like other labs.
My 2013 Western Star always read in the 40’s, my 2016 Cascadia reads in the teens..

Thanks!
I’ll resample and see what the new numbers are