ACEA E4-16
ACEA E4-16 oils are Ultra High Performance Diesel (UHPD) lubricants designed for use in severe duty, long-drain applications.
The main physical and chemical requirements for ACEA E4-16 are shown below.
| Requirement | Method | Unit | Limit |
| HTHS viscosity | CEC L-36-A-90 | cP | ≥ 3.5 |
| Sulphated Ash | ASTM D874 | %wt | ≤ 2.0 |
| Phosphorus | ASTM D5185 | %wt | n/a |
| Sulphur | ASTM D5185 | %wt | n/a |
| Evaporation loss (NOACK) | CEC L-40-A-93 | % | ≤ 13 |
| Total Base Number | ASTM D2896 | mgKOH/g | ≥ 12 |
ACEA E4-16 is usually coupled with Daimler MB-Approval 228.5 and MAN 3277, MTU Oil Category 3 and Deutz DQC IV-10.
Changes
ACEA E4 was first introduced into the ACEA Oil Sequences in 1998. Although the testing requirements for ACEA E4 have been updated with each issue of the sequences it was not until 2008 that the severity was increased. This was due to the replacement of older engine tests with new engine tests.
A number of further changes to the requirements for ACEA E4-16 have been included in the ACEA 2016 issue of the oil sequences.
The changes for ACEA E4-16 are summarised below:
| Test | Change for ACEA 2016 |
| CEC L-112 | New seals materials for oil elastomer compatibility |
| CEC L-109 | New oxidation test with biodiesel |
| CEC L-085-99 (PDSC) | Limits established for ACEA E4 |
| Shear Stability | Test can now be run using CEC L-014-93 or ASTM D7019 for 30 cycles, and ASTM D7019 only for 90 cycles |