| Passenger Car Engine Test Category For API SM |
| Requirements | Test Method | Properties | Unit | Limits |
| SM/EC
GF-4 |
| 1. LABORATORY TESTS |
| 1.1 Viscosity Grades | | All those that apply, typically SAE 5W-20, 5W-30 and 10W-30. Per SAE J300 specification | | Manufacturer sets targets within SAE J300 parameter |
| 1.2 Foam Test
(Option A) | ASTM D892
ASTM D6082 | Sequence I | ml initial
Foam/ml
after settling | 10/0 max |
| Sequence II | 50/0 max |
| Sequence III | 10/0 max |
| Sequence IV | 100/0 max |
| 1.3 Phosphorus | ASTM D4951 | | % | 0.06 min
0.08 max(1) |
| 1.4 EOFT | ASTM D6795 | | % reduction | 50 max |
| 1.5 EOWTT | ASTM D6794 | with 0.6% Water | % reduction | 50 max |
| with 1.0% Water | % reduction | 50 max |
| with 2.0% Water | % reduction | 50 max |
| with 3.0% Water | % reduction | 50 max |
| 1.6 TEOST (MHT4) | | Total Deposits | mg | 35 max(2) |
| 1.7 Homogeneity and Miscibility | ASTM D6922 | | | pass |
| 1.8 Scanning Brookfield | ASTM D5133 | Gelation Index | | 12 max |
| 1.9 Volatility | ASTM D5800 | Volatility (Noack) | % off @ 250°C | 15 max |
| ASTM D6417 | Volatility (GCD) | % off @ 371°C | 10 max |
| 1.10 BRT | ASTM D6557 | Rust rating | Avg Gray Value | 100 min |
| 1.11 Sulfur | ASTM D4951 or | Sulfur content of 0W and 5W multigrades | % | 0.5 max(3) |
| ASTM D2622 | Sulfur content of 10W multigrades | % | 0.7 max |
| 2. ENGINE TESTS FOR API SM |
| 2.1 Sequence IIIG | | Viscosity increase at 100 hours | % | 150 max |
| Average weighted piston deposits | merits | 3.5 min |
| Hot stuck rings | # | none |
| Average cam plus lifter wear | microns | 60 max |
| 2.2 Sequence IIIGA | | Aged oil low temperature viscosity
using ASTM D4684 | | Meet requirements of the
original grade or the next
higher grade(4) |
| 2.3 Sequence IVA | ASTM D6891 | Cam wear average | microns | 90 max |
| 2.4 Sequence VG | ASTM D6593 | Average engine sludge | merits | 7.8 min |
| Rocker arm cover sludge | merits | 8.0 min |
| Average piston skirt varnish | merits | 7.5 min |
| Average engine varnish | merits | 8.9 min |
| Oil screen clogging | % | 20 max |
| Hot stuck rings | # | none |
| Cold stuck rings | # | rate & report |
| Oil ring clogging | % | rate & report |
| Follower pin wear, cyl #8, avg | microns | rate & report |
| Ring gap increase, cyl #1 & #8, avg | microns | rate & report |
| Oil screen debris | % area | rate & report |
| 2.5 Sequence VIII | ASTM D6709 | Bearing weight loss | mg | 26 max |
| 10 hr. stripped viscosity | cSt | Stay in grade |
| 2.6 Sequence VIB | ASTM D6837 | SAE 0W-20 and 5W-20 viscosity grades | % FEI1/%FEI2 | 2.3 / 2.0 min |
| SAE 0W-30 and 5W-30 viscosity grades | % FEI1/%FEI2 | 1.8 / 1.5 min |
| SAE 10W-30 and all other viscosity grades | % FEI1/%FEI2 | 1.1 / 0.8 min |
| Limits for SM Non-ILSAC GF-4 viscosity grades:
(1) 0.06 min, no max
(2) 45 max
(3) Not Req.
(4) Not Req. |
Версия для печати
