Multigrade oils such as SAE 5W-30 and 10 W-30 are widely used because, under all but extremely hot or cold conditionas, they are thin enough to flow at low temperatures ad thick enough to perform satisfactorily at high temperatures. Note that vehicle requirements may vary.
FOLLOW YOUT VEHICLE NABUFACTURER'S RECOMENDATION ON SAE OIL VISCOSITY GRADE.Oil Viscosity
 |
| Oil Viscosity |
If lowest expected outdoor temperature is
0 degre C (32F)
Typical SAE Viscosity Grades for passenger cars
0W-20, 0W-30, 5W-30, 10W-30, 10W-40, 20W-50
If lowest expected outdoor temperature is
-18 degre C (0F)
Typical SAE Viscosity Grades for passenger cars
0W-20, 0W-30, 5W-20, 5W-30, 10W-30, 10W-40
If lowest expected outdoor temperature is
Below -18 degree C (0F)
Typical SAE Viscosity Grades for passenger cars
0W-20, 0W-30, 5W-20, 5W-30.
ILSAC PERFORMANCE CLASSIFICATION
ILSAC STANDARD FOR PASSENGER CAR ENGINE OILS
Name : GF-5
Status : Current
Service : Introduced in october 2010 for 2011 and older vehicles, designed to provide improved high temperature deposit protection for pistons and turbocharger, more stringent sludge control, improved fuel economy, enhanced emission control system compatibility, sseal compatibility, and protection of engines operating on ethanol containing fuels up to E85.
Name : GF-4
Status : Obsolete
Service : Valid until september 30, 2011 use GF-5 where GF-4 is recommended
Name : GF-3
Status : Obsolete
Service : Use GF-5 where GF-3 is recommended.
Name : GF-2
Status : Obsolete
Service : Use GF-5 wheer GF-2 is recommended.
Name : GF-1
Status : Obsolete
Service : Use GF-5 wheer GF-1 is recommended.
ILSAC Oil Specifications
IlSAC, international Lubricants Standarization and approval Committee, is formed in 1992 by AMAA ( American Automobile Manufacturers Association ), representatives of Daimlers Chrysler Corporation, Ford Motor Company and General Motors Corporation and JAMA ( Japan Automobile Manufacturers Association) to define the need, parameters, licensing and administration of lubricant specifications. Together with the tripartite system ( API, SAE ans ASTM) the formed EOLCS, the engine oils licensing and Certification System. ILSAC oils often carry the API service symbol (Donut) including the energy conversing designation and / or API Certification mark. (Startburst).
ILSAC
- ILSAC - GF1, the ILSAC GF-1 standard indicates the oil meets both API SH and the energy conversing II (EC-II) requirements.
- ILSAC - GFI, The ILSAC GF-II Replaced GF-I in 1996. The oil must meet API SJ and EC II requirements. The GF-II standards requires 0W-30, 0W-40, 5W-20, 5W-30, 5W-40, 5W-50, 10W-30, 10W-40 and 10W-50 motor oils to meet stringent requirements for phosporus content, low temperature operation, high temperature deposits and foam control.
- ILSAC GF-III an ILSAC GF-III an oil must meet both API SL and the EC -II requirements.
- ILSAC GF-IV is similar to the API SM service category, but it requires an additional sequence VIB fuel economy test (ASTM D6837).
- ILSAC GF-V introduced in OCtober 2010 for 2011 and older vehicles, designed to provide improved high temperature deposit protection for pistons and turbochargers, more stringent sludge control, improved fuel economy, enhanced emission control system compatibility.
- ILSAC GF-VIA will be fully backward compatible with ILSAC GF-5 but would offer better fuel economy.
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