ACEA E7-08 Issue 2
Overview
ACEA E7-08 Issue 2 oils are Super High Performance Diesel (SHPD) lubricants for use in mid-drain applications. ACEA E7-08 Issue 2 contains many elements of the API CI-4 specification.
ACEA E7-08 Issue 2 contains many elements of the North American API CI-4 specification. Since E2 Issue 2 is not in the current Oil Sequences, the minimum ACEA performance level for Heavy Duty Diesel applications will become ACEA E7-08 Issue 2.
ACEA E7-08 Issue 2 oils are typically SAE 15W-40 based on API Group I base oils. However, there is a growing demand for ACEA E7-08 Issue 2 10W-40 oils with enhanced durability. The main physical and chemical requirements for ACEA E7-08 Issue 2 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 |
- |
| Sulphur |
ASTM D5185 |
%wt |
- |
| Evaporation loss (NOACK) |
CEC L-40-A-93 |
% |
≤ 13 |
| Total Base Number |
ASTM D2896 |
mgKOH/g |
≥ 91 |
ACEA E7-08 Issue 2 is usually coupled with Daimler MB-Approval 228.3, MAN 3275 and Volvo VDS-3.
The Daimler, MAN and Volvo performance specifications all build on top of an ACEA E7-08 Issue 2 baseline with additional performance requirements in areas such as wear protection.
Note 1 : Values <9.00 are not accepted.
Changes
A number of changes to the requirements for ACEA E7-08 Issue 2 have been introduced in the ACEA 2010 issue of the oil sequences.
The changes for ACEA 2010 are summarised below:
| Test |
Change for ACEA 2010 |
| OM602A |
Replaced by OM646LA |
| OM646LA |
Wear test evaluating exhaust cam wear |
| OM441LA |
Replaced by OM501LA |
| OM501LA |
New test evaluating engine and piston cleanliness |
| Mack T12 |
Replaces Mack T-10 for evaluating wear and corrosion |
Not only does ACEA 2010 bring changes in the engine hardware used in the evaluation of ACEA E7-08 Issue 2 oils, both the new OM646LA and OM501LA tests will also be the first engine tests in the Heavy Duty Sequences to be run with a modern 5% biodiesel (B05) fuel.
ACEA E7-08 Issue 2 now has a minimum TBN level of ≥ 9 mgKOH/g (ASTM D2896), when previously, there was no minimum level specified.
Relative Performance
The relative performance diagrams presented below compare Lubrizol's interpretation of the performance of requirements of the ACEA 2010 E7-08 Issue 2 oil sequence with the ACEA 2010 E4-08 Issue 2 oil sequence.
This comparison illustrates how both sequences are expected to provide different performance with ACEA E7-08 Issue 2 providing similar bore polishing but a higher level of performance in terms of wear protection, soot handling and corrosion protection than ACEA E4-08 Issue 2.
The relative performance diagrams presented below compare Lubrizol's interpretation of the performance of requirements of the ACEA 2010 E7-08 Issue 2 oil sequence with the ACEA 2010 E9-08 Issue 2 oil sequence.
This comparison illustrates how both sequences are expected to provide similar performance in terms of bore polishing, wear protection and piston cleanliness. However, ACEA E9-08 Issue 2 is expected to provide a higher level of performance in terms of corrosion protection, soot handling and aftertreatment compatibility than ACEA E7-08 Issue 2.
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.