HPL 5W-30 PCMO No VII; 5.3k mi; 2019 Kia Sorento V6; 105k mi

[Azimuth]

Samples as follows:

#1 - M1 ESP 5W-30
#2 - HPL PCMO 5W-30 (2.9qt) + 4qt HPL PCMO 5W-40
#3 & #4 - Valvoline R&P 5W-30
#5 - HPL PCMO No VII 5W-30

 

[buster]

Pretty consistent results across the board regardless of brand. On a side note, the VRP stayed a 30 grade despite 2.6% fuel dilution. The HPL detergency is very stout.

Na is up in this sample. Not sure what that is about.

 

[The Critic]

Na is up in this sample. Not sure what that is about.

Potassium as well. Hopefully this engine doesn't have the infamous cylinder head bolt issue.

 

[Azimuth]

I noticed there was a coolant leak (reservoir kept getting low even after refelling), so I got it checked out. I had the water pump replaced, and it's been good since. This was a few weeks ago. Could that be the issue? I'm 500 mi into the current OCI, should I get another UOA at 1k?