Table 4.
Contaminants' SCoF rank
| Contaminant | SCoF rank |
|---|---|
| Grease | 1 |
| Engine oil (diesel) | 2 |
| Machine oil | 3 |
| Cooking oil | 4 |
| Water-soluble cutting oil | 5 |
| Water | 6 |
SCoF, static coefficient of friction.
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