Total mileage 21300, 2nd oil change, 1 makeup qt, 11600mi on oil
Fe 94
Cr 5
Pb 3
Cu 20
Al 33
Ni 1
Si 6
Na 7
K 51
H2O 0
glycol 0
Mg 10
Ca 2509
K 910
P 815
vis 11.6
Fuel soot 0.6%
TBN 1.5
TAN 4.83
The Fe doesn't worry me, it's only the 2nd change. The TBN/TAN balance does worry me, and I'll have to start demanding changes before the OCI indicator does. Afterwards, I might start using D1 ESP, even though it's higher ash and P.
Charlie
Fe 94
Cr 5
Pb 3
Cu 20
Al 33
Ni 1
Si 6
Na 7
K 51
H2O 0
glycol 0
Mg 10
Ca 2509
K 910
P 815
vis 11.6
Fuel soot 0.6%
TBN 1.5
TAN 4.83
The Fe doesn't worry me, it's only the 2nd change. The TBN/TAN balance does worry me, and I'll have to start demanding changes before the OCI indicator does. Afterwards, I might start using D1 ESP, even though it's higher ash and P.
Charlie