| Heavy-Duty Diesel Engine Test Category
For API CI-4 |
| Requirements | Test Method | Properties | Unit | Limits |
| 1 Test | 2 Tests | 3 Tests |
| 1. LABORATORY TESTS FOR API CI-4 AND CI-4 PLUS |
| 1.1 Viscosity Grades | | SAE J300 | | Manufacturer specifies viscosity target within SAE J300 specification |
| 1.2 High Temperature Corrosion Bench Test | ASTM D6594 | Copper increase, max | ppm | 20 | No MTAC(1)(2) |
| Lead increase, max | ppm | 120 |
| Tin increase, max | ppm | 50 |
| Copper strip rating, max (D130) | | 3 |
| 1.3 Foam Test | ASTM D892
(Option A not allowed) | Foaming/Settling, max | | | No MTAC(1)(2) |
| Sequence I | mL | 10/0 |
| Sequence II | mL | 20/0 |
| Sequence III | mL | 10/0 |
| 1.4 Shear Stability | ASTM D6278 | After shear viscosity, 10W-30, min | cSt | 9.3 | No MTAC(1)(2)(3) |
| After shear viscosity, 15W-40, min | cSt | 12.5 |
| 1.5 Volatility | ASTM D5800
(Noack) | Evaporative loss at 250°C, max | % | 15 | No MTAC(1)(2) |
| 1.6 High Temperature /
High Shear | As allowed in
SAE J300 | Viscosity, min | mPa-s | 3.5 | No MTAC(1)(2) |
| 1.7 Low Temperature Pumpability | ASTM D4684
(MRV TP-1) | Viscosity of 75h used oil sample from T-10 Test at -20°C, max | mPa-s | 25000 | No MTAC(1)(2) |
| Modified D4684
(if yield stress) | Viscosity at -20°C, max
Yield stress, max | mPa-s
Pa | 25000
35 |
| 1.8 Elastomer Compatibility | Limits |
| | Volume Change | Hardness | Tensile Strength | Elongation |
| Nitrile | +5/-3 | +7/-5 | +10/-TMC1006 | +10/-TMC1006 |
| Silicone | +TMC1006/-3 | +5/-TMC1006 | +10/-45 | +20/-30 |
| Polyacrylate | +5/-3 | +8/-5 | +18/-15 | +10/-35 |
| FKM | +5/-2 | +7/-5 | +10/-TMC1006 | +10/-TMC1006 |
| 2. ENGINE TESTS FOR API CI-4 |
| 2.1 Mack T-8E | ASTM D5967
(Ext. T8-E) | Relative Viscosity at 4.8% soot, max
(RV=Visc. at 4.8% soot/Visc. of new oil sheared in D6278) | | 1.8 | 1.9 | 2.0 |
| 2.2 Mack T-10 | T10 test with EGR | Merit Rating, min | | 1000 | 1000 | 1000 |
| 2.3 Cummins M11-EGR | M11 high soot test with EGR | Crosshead wight loss, max | mg | 20.0 | 21.8 | 22.6 |
| Top ring weight loss, max | mg | 175 | 186 | 191 |
| Filter delta pressure at 250h, max | kPa | 275 | 320 | 341 |
| Sludge rating, min | merits | 7.8 | 7.6 | 7.5 |
| 2.4 Caterpillar 1R | 1R piston deposit test | WDR, max | demerits | 382 | 396 | 402 |
| TGC, max | demerits | 52 | 57 | 59 |
| TLC, max | demerits | 31 | 35 | 36 |
| Initial Oil Consumption, max | g/h | 13.1 | 13.1 | 13.1 |
| Final Oil Consumption, max | g/h | IOC+1.8 | IOC+1.8 | IOC+1.8 |
| Piston ring and liner scuffing | | None | None | None |
| Ring Sticking | | None | None | None |
| 2.5 Caterpillar 1K
| ASTM RR: D02-1273
| WDK, max | demerits | 332 | 347 | 353 |
| TGF, max | % | 24 | 27 | 29 |
| TLHC, max | % | 4 | 5 | 5 |
| Oil Consumption
(0-252h), max | g/kW-h | 0.5 | 0.5 | 0.5 |
| Piston ring and liner scuffing | | None | None | None |
| or |
| Caterpillar 1N | ASTM RR:D02-1321 | WDN, max | demerits | 286.2 | 311.7 | 323.0 |
| TGF, max | % | 20 | 23 | 25 |
| TLHC, max | % | 3 | 4 | 5 |
| Oil Consumption
(0-252h), max | g/kW-h | 0.5 | 0.5 | 0.5 |
| Piston ring and liner scuffing | | None | None | None |
| | | Ring Sticking | | None | None | None |
| 2.6 Roller Follower Wear Test | ASTM D5966 | Average Pin Wear, max | µm
(mils) | 7.6
(0.30) | 8.4
(0.33) | 9.1
(0.36) |
| 2.7 Engine Oil Aeration Test | ASTM RR:D02-1379 | Aeration, max | Vol % | 8.0 | MTAC applies(2) |
| 2.8 Sequence IIIF | ASTM RR:D02-1491 | Viscosity increase at
80h, max | % | 275 | MTAC applies(2) |
| 3. ENGINE TESTS FOR API CI-4 PLUS (same as API CI-4 Engine Tests above in addition to following) |
| 3.1 Mack T-11 | T-11 Soot/
Viscosity Control | Minimum TGA Soot Content at 12.0 cSt
increase at 100°C | % | 6.00 | 5.89 | 5.85 |
| (1) Not an ACC Test
(2) MTAC is a statistical method for treating engine test results. Consult your sales representative for further information.
(3) Limit of 30 pass for API CI-4, 90 pass for API CI-4 PLUS. |
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