Bought vehicle used, added 2QT of Castrol Edge Extended Performance 5W30 (gold bottle), this is the oil I used when I had the oil changed too. Will try to get another analysis done at 3,000 miles.
Blackstone Labs comments:
Maybe this engine had some work done to it before you bought it -- wear metals and silicon are
elevated compared to averages, and wear-in from recent work would be a nice explanation. Otherwise,
maybe the silicon is from abrasive dirt and it's causing piston wear (aluminum) and steel wear (iron).
Brass/bronze wear (copper) isn't typically affected by dirt. Check the air filter for leaks or issues. Universal
averages show typical wear levels for this engine type after ~5,200 miles on the oil. The viscosity is in the
5W/30 range, and the TBN was fine, but try 3,000 miles to monitor.
Fram CA8039 Extra Guard
OIL UNKNOWN 5W30
MILES IN USE ?
O&F CHANGED Y
MAKEUP OIL 2QT
SAMPLE TAKEN 21-AUG-2017
Values Should Be*
SUS Viscosity @ 210°F 62.9 55-62
cSt Viscosity @ 100°C 11.04 8.8-11.1
Flashpoint in °F 435 >365
Fuel % <0.5 <2.0
Antifreeze % 0.0 0.0
Water % 0.0 0.0
Insolubles % 0.2 <0.6
TBN 2.8 >1.0