I finally decided to do UOAs on my two cars. My primary purpose is making sure contaminants such as coolant or gas are not there. RA has Wix UOAs for $12 including shipping; NAPA is also selling their UOAs cheap—so unless someone talks me out of them, I'll go to one of them for the UOAs.
A few questions I have:
(1) I read here that the Wix & NAPA UOAs are done by the same lab. Is that still true?
(2) I have also heard some criticism of how a lab might determine fuel in a sample. Would the Wix or NAPA lab be good for this? How about how they determine coolant?
At any rate, getting the most accurate number on these liquid contaminants is the most important thing to me. I'd prefer not to look at wear metal numbers at all, because I know I'll obsess about them, but my plan is simply to ignore them unless one of them comes up abnormally well high of averages—which will indicate a problem that needs to be addressed.
A few questions I have:
(1) I read here that the Wix & NAPA UOAs are done by the same lab. Is that still true?
(2) I have also heard some criticism of how a lab might determine fuel in a sample. Would the Wix or NAPA lab be good for this? How about how they determine coolant?
At any rate, getting the most accurate number on these liquid contaminants is the most important thing to me. I'd prefer not to look at wear metal numbers at all, because I know I'll obsess about them, but my plan is simply to ignore them unless one of them comes up abnormally well high of averages—which will indicate a problem that needs to be addressed.