Originally Posted By: demarpaint
Considering we're talking ppm and only have one sample from each I'd say it's hard to make any kind of determination. There are far too many things to factor in with only one sample of each. Looking at the dates it might be accurate to assume one run of the oil was from summer to fall, and the other run from fall to winter, when temperatures play into it, negatively. I'm interested in our resident experts comments. I'm also assuming there was a typo in the miles [8,000] in the 11/23 report?
It does, I believe.
This is what they call 'cold start wear' ...... a form of corrosion wear.
No, it's not an adhesion wear, neither is it a an abrasion wear.
Originally Posted By: aquariuscsm
I'm guessing it's because Castrol is a better oil.
I would agree so ....with 'stouter' additive package in the 'better' oil.
Marketing adverts would have us believe that xW20 provides lower cold start wear .......
giving me the impression that it's lower viscosity that lowers cold start wear ....
and this cold start wear is adhesion wear or abrasion wear in nature.....
not elaborating that this cold start wear is corrosion wear..
Nothing was attributed to stronger additive package, hence the confusion.
JMHO.