Is there a VOA out there for the Coastal Fleet 15w-40 HDEO sold at Advance Auto Parts, Auto Zone, etc?
I called Coastal and was told their CI-4 grade Fleet 15w-40 had:
P-1280 ppm
Zn-1410 ppm
C-2410 ppm
TBN-10
While I'd like to believe these numbers, I suspect they may be slightly dated as it seems on the high side for an inexpensive oil. For example, recent VOA I've seen for CI-4+ Rotella 15w-40 had zinc levels in the 1200-1300 ppm range.
Unfortunately, I forgot to ask what the date was for the Coastal specs. Although, he did say the results were "typical".
Do the refiners fool around with additive levels while still retaining the same API grade from year to year?
I called Coastal and was told their CI-4 grade Fleet 15w-40 had:
P-1280 ppm
Zn-1410 ppm
C-2410 ppm
TBN-10
While I'd like to believe these numbers, I suspect they may be slightly dated as it seems on the high side for an inexpensive oil. For example, recent VOA I've seen for CI-4+ Rotella 15w-40 had zinc levels in the 1200-1300 ppm range.
Unfortunately, I forgot to ask what the date was for the Coastal specs. Although, he did say the results were "typical".
Do the refiners fool around with additive levels while still retaining the same API grade from year to year?