1st December 2016, with mandatory for new claims 1st December 2017, ACEA has published the European oil sequences issue 2016, these new sequences include some interesting news, in this report, we also go to compare them with the latest news from API / ILSAC.
Keeping with laster issues, ACEA keeps the Class A/B, for gasoline and light-duty diesel engines, Class C, for catalyst compatible oils for gasoline and light-duty diesel engines with after-treatment devices, and Class E, for heavy-duty diesel engines.
First new in Class A/B is Category 1 (A1/B1) has been removed, this Category is related with high SAPS content and low HTHS viscosity, from 2.9 up to 3.5 cP except for SAE xW-20 lubricants with HTHS viscosity upper to 2.6 cP.
The remaining Categories A3/B3, A3/B4 and A5/B5 keep the same conditions that last issue (A3/B3 and A3/B4 with HTHS viscosity upper to 3.5 cP and A5/B5 extended drain intervals with HTHS viscosity from 2.9 up to 3.5 cP) but all of them add a new test on effects of biodiesel (CEC L-104-16).
In this way, ILSAC proposes new GF-6 specifications, for the first license in April 2018 and the date of mandatory claim April 2019. This new ILSAC GF-6 encompasses two potential specifications, ILSAC GF-6A, which would replace the current ILSAC GF-5, with Phosphorous content from 0.06 % up to 0.08 %, and Sulphur content up to 0.5 %, with similar values to ACEA Class C. And the proposed ILSAC GF-6B, that would provide the same performance, but with the added aim of lower HTHS viscosity, from 2.3 cP up to 2.6 cP, to deliver potential further fuel economy benefits. This offers the possibility of operating at new viscosity ranges SAE 0/5W-16.
HTHS > 3.5
2.9 < HTHS < 3.5
Very Low Viscosity
ACEA (High SAPS)
The main new in this Class is the introduction of a new Category 5 (C5), with same performance that Category C3 (TBN up to 6.0, Sulphur content up to 0.3 %, Phosphorous content from 0.07 % up to 0.09 % and Sulphur Ash content up to 0.8 %) but very low HTHS viscosity, from 2.6 cP up to 2.9 cP. The viscosity is similar to API GF-6B, so ACEA considers Class C to develop lubricants to deliver fuel economy.
In respect of the rest of the parameters, all the Class C add a new test on oil oxidation with biodiesel (CEC L-109-6) and effects of biodiesel, with the same performance that Class A/B.
HTHS > 3.5
HTHS > 2.9
Very Low Viscosity
2.6 < HTHS < 2.9
S < 0.3 %
0.07 % < P < 0.09 % SA < 0.8 %
S < 0.2 %
SA < 0.5 %
This Class keeps their Categories E4, E6, E7, and E9, almost unchanged. We should keep in mind that all these categories have an HTHS viscosity upper to 3.5 cP, Categories E4 and E7 with High SAPS content, and Categories E6 and E9 with Low SAPS content; with requirements on bore polishing, piston cleanliness and wear (tests CEC L-101-08 and CEC L-099-08) for extended drain intervals (UHPD - Ultra-High-Performance Diesel), and requirements on soot induced wear and wear in liner, rings, and bearings (test ASTM D7468 and ASTM D7422) for standard drain intervals (SHPD - Super High-Performance Diesel) grouping Categories ACEA E4 and E6 in UHPD and Categories ACEA E7 and E9 for SHPD oils.
Also, Class includes new requirements on oil oxidation with biodiesel and, just for Categories E6 and E9, requirements on biofuel impacted piston cleanliness and engine sludge.
On the other hand, new API diesel engine oil standards, from December 2016, CK-4 and FA-4. Summarized, API CK-4 describes high HTHS viscosity upper to 3.5 cP and low SAPS content, in the same way, that CJ-4, but provide higher performance than this category and the older API CI-4 Plus, CI-4, and CH-4.
New API FA-4 describes the same performance that API CK-4 but with low HTHS viscosity from 2.9 up to 3.2 cP and viscosity ranges SAE 0/5/10W-30. So, heavy-duty diesel engine oils, even off-road, deliver potential further fuel economy benefits.
Bore polishing, piston cleanliness, and wear
(CEC L-101-08, CEC L-099-08)
Extended Drain Intervals
Soot induced wear and wear in liner, rings, and bearings
(ASTM D7468, ASTM D7422)
Standard Drain Intervals