ACEA E8-21
ACEA E8-21 oils are low SAPS1 Ultra High Performance Diesel (UHPD) lubricants designed for use in severe duty, long drain applications.
ACEA recommends their use in vehicles fitted with aftertreatment systems for the reduction of particulate matter (DPFs) and oxides of nitrogen (EGR and/or SCR), in combination with low sulphur diesel fuel.
ACEA E8-21 replaces ACEA E6-16 in the latest update of the sequences.
The main physical and chemical requirements for ACEA E8-21 are shown below:
| Requirement | Method | Unit | Limit |
| HTHS viscosity | CEC L-36-A-90 | cP | ≥ 3.5 |
| Sulphated Ash | ASTM D874 | %wt | ≤ 1.0 |
| Phosphorus | ASTM D5185 | %wt | ≤ 0.08 |
| Sulphur | ASTM D5185 | %wt | ≤ 0.3 |
| Evaporation loss (NOACK) | CEC L-40-A-93 | % | ≤ 13 |
| Total Base Number | ASTM D2896 | mgKOH/g | ≥ 7 |
ACEA E8-21 is typically grouped with a range of other approvals which may vary depending on the viscosity grade. Some examples of approvals that can be targeted in conjunction with E8-21 are API CK-4, MB228.51, MB228.52, MAN M3677/M3477 &/or M3775, Scania Low Ash/LDF-4, MTU Type 3.1, Volvo VDS-4.5 & Deutz DQC IV-18 LA.
Typically, OEM approvals outlined by Daimler, MAN, MTU and Deutz will build on top of an ACEA E8-21 baseline with additional performance requirements in areas such as wear protection.
Note 1 : SAPS refers to Sulphated Ash, Phosphorus and Sulphur, the levels of which are often restricted in the latest performance specifications.
Changes
ACEA E8-21 introduces additional requirements in comparison to ACEA E6-16.
The changes beyond the ACEA E6-16 category are summarized below:
| Test | ACEA E8-21 vs ACEA E6-16 |
| CEC-XXXXXX (OM471) | Introduced as a new piston cleanliness test |
| CEC L-101-08 (OM501LA) | Not included in ACEA E8-21 |
| ASTM D8048 (Volvo T-13) | Added with limits aligning with API CK-4. Increased oxidation performance requirements vs ACEA E6-16 |
| ASTM D8047 (COAT) | Introduced into E8-21 at API CK-4 level |
| CEC L-109-16 (OM646BIO) | Increase of 2 merit points |
| CEC L-112 (Seals) | Limits updated to align with latest OEM specifications |
| ASTM 6443 (Chlorine) | Chlorine now to be reported |
Relative Performance
The relative performance diagrams presented below compare Lubrizol’s interpretation of the performance of requirements of the ACEA 2021 E8-21 oil sequence with the ACEA 2016 E6-16 oil sequence.
Click here to view Lubrizol's Relative Performance Tool.
Disclaimer:
The relative performance diagrams represent an interpretation made by The Lubrizol Corporation ("Lubrizol") of various rules and specifications. They are not a literal translation of a performance specification and should not be used as a replacement for evaluating engine oil performance in accordance with the relevant vehicle manufacturer's requirements. They are presented to assist the reader in visualizing some of the parameters that need to be considered and balanced when formulating a lubricant. Lubrizol accepts no liability for any losses or damages incurred by the user as a result of them relying on the interpretation made by Lubrizol. Readers are advised to consult the specific rules for greater detail with regard to meeting the requirements as set forth in any specification.
ACEA E8-21 and ACEA E6-16
This comparison illustrates how ACEA E8-21 is expected to provide a higher level of aftertreatment system compatibility, piston cleanliness and oxidation protection.