Research Article
Monitoring of the Physical and Chemical Properties of a Gasoline Engine Oil during Its Usage
Table 2
Standard deviations of the data of Table
1.
| | No. |
Element | Kilometer of operation | | 0 | 500 | 1000 | 2000 | 3500 | 6000 | 8500 | 11500 |
| | (1) | S (±0.3) | ±0.3 | ±0.5 | ±0.2 | ±0.1 | ±0.1 | ±0.3 | ±0.7 | ±0.3 | | (2) | Zn (±0.9) | ±0.1 | ±0.1 | ±0.5 | ±0.8 | ±0.6 | ±0.3 | ±0.2 | ±0.1 | | (3) | P (±0.8) | ±0.3 | ±0.3 | ±0.3 | ±0.3 | ±0.3 | ±0.3 | ±0.3 | ±0.3 | | (4) | Mg (±0.6) | ±0.1 | ±0.1 | ±0.1 | ±0.9 | ±0.4 | ±0.6 | ±0.3 | ±0.5 | | (5) | Si (±0.6) | ±0.4 | ±0.1 | ±0.7 | ±0.5 | ±0.2 | ±0.2 | ±0.6 | ±0.1 | | (6) | Ca (—) | ±0.3 | ±0.7 | ±0.6 | ±0.3 | ±0.5 | ±0.9 | ±0.1 | ±0.3 | | (7) | Ba (—) | ±0.3 | ±0.3 | ±0.3 | ±0.3 | ±0.3 | ±0.3 | ±0.3 | ±0.3 | | (8) | B (±0.1) | ±0.6 | ±0.1 | ±0.1 | ±0.7 | ±0.8 | ±0.1 | ±0.5 | ±0.9 | | (9) | Mo (±0.3) | ±0.1 | ±0.1 | ±0.4 | ±0.2 | ±0.1 | ±0.1 | ±0.3 | ±0.3 | | (10) | Al (±0.3) | ±0.3 | ±0.6 | ±0.3 | ±0.7 | ±0.1 | ±0.3 | ±0.4 | ±0.5 | | (11) | Ag (±0.1) | ±0.5 | ±0.2 | ±0.1 | ±0.5 | ±0.6 | ±0.5 | ±0.4 | ±0.5 | | (12) | Cr (±0.1) | ±0.1 | ±0.3 | ±0.4 | ±0.5 | ±0.6 | ±0.6 | ±0.3 | ±0.1 | | (13) | Ni (±0.1) | ±0.3 | ±0.2 | ±0.3 | ±0.4 | ±0.4 | ±0.3 | ±0.3 | ±0.9 | | (14) | Na (±0.2) | ±0.1 | ±0.1 | ±0.2 | ±0.2 | ±0.1 | ±0.2 | ±0.2 | ±0.3 | | (15) | Mn (—) | — | ±0.2 | ±0.1 | ±0.3 | ±0.1 | ±0.1 | ±0.1 | ±0.5 | | (16) | Fe (—) | — | ±0.2 | ±0.5 | ±0.3 | ±0.3 | ±0.6 | ±0.1 | ±0.2 | | (17) | Cu (—) | — | ±0.1 | ±0.2 | ±0.6 | ±0.5 | ±0.1 | ±0.2 | ±0.2 | | (18) | Sn (—) | — | ±0.2 | ±0.1 | ±0.1 | ±0.3 | ±0.1 | ±0.2 | ±0.3 | | (19) | Ti (—) | — | ±0.5 | ±0.7 | ±0.4 | ±0.2 | ±0.1 | ±0.1 | ±0.3 | | (20) | V (—) | — | ±0.3 | ±0.1 | ±0.4 | ±0.2 | ±0.1 | ±0.1 | ±0.3 | | (21) | Pb (—) | — | — | — | — | ±0.1 | ±0.1 | ±0.1 | ±0.2 | | (22) | Cd (—) | — | ±0.1 | ±0.1 | ±0.1 | ±0.2 | ±0.2 | ±0.2 | ±0.3 | | (23) | Sb (—) | — | ±0.1 | ±0.1 | ±0.1 | ±0.3 | ±0.4 | ±0.1 | ±0.2 | | (24) | K (—) | — | — | — | — | — | — | — | ±0.3 |
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