| Test |
Normal |
Caution |
Unsatisfactory |
Urgent |
| Iron |
0-125 |
126-175 |
176-250 |
251+ |
| Aluminum |
0-12 |
13-25 |
26-40 |
41+ |
| Copper |
0-20 |
21-70 |
71-130 |
131+ |
| Chromium |
0-7 |
8-15 |
16-30 |
31+ |
| Silicon |
0-18 |
19-25 |
26-30 |
31+ |
| Lead |
Not recorded due to lead in the fuel. |
| Tin |
0-12 |
13-30 |
31-45 |
46+ |
| Sodium |
20 ppm or more above the new oil may indicate anti-freeze |
| Molybendum |
0-10 |
11-25 |
26-35 |
36+ |
| SAE Grade |
Should not change more than 1 grade from the new oil |
| Viscosity |
Should not increase or decrease more than 30% from new |
| % Solids |
0-2.0 |
2.1-4.0 |
4.1-6.0 |
6.1+ |
| Fuel Dilution |
Negative |
--- |
Trace |
Positive |
| Water |
Negative |
--- |
Trace |
Positive |
| Anti-Freeze |
Negative |
--- |
Trace |
Positive |
| Mid-Continent Testing Laboratories, Inc. emphasizes that statistics be used to establish a general wear level for each vehicle. Once this is established, and change from the normal pattern may indicate a possible problem. |
