sulphated ash
also called ash content
The mass of incombustible ash the oil leaves behind, as a percentage — the low-SAPS fact the ACEA C-sequences are built on and the reason a vehicle with a particulate filter may not take an ordinary oil. Published as `Ash, Sulphated | ASTM D874 | % wt` on Castrol GTX 20W-50 (0.8), Magnatec 5W-30 (1.1) and GTX Diesel 15W-40 (1.35), and as `Sulphated Ash | % m/m | ASTM D874 | 1.52` on TotalEnergies Rubia S 40. It is a lubricant fact and not an engine-oil-class fact: it is meaningful for any crankcase or gear oil, which is why it homes here and does not earn a class. Reuses the LIVE `PercentUnits` minted at b153 — no new unit machinery. Concern measurement.
Sulphated ash is a measured figure.
It belongs to measurement — its measurable, physical facts.
asked by the kinds that answer it
3 kinds answer it, each for a single value. The same question can be reused by unrelated kinds — one meaning, many homes.
asked by kinds that answer it
The same question can be reused by unrelated kinds — one meaning, many homes.
| kind | how many |
|---|---|
| service fluid | one |