If an automotive owner's manual calls for an API SJ or SL oil, an API SN oil will provide full protection. For diesel engines, the latest category usually - but not  adequate protection against build-up of engine sludge, oxidation, or wear. SF. Obsolete. CAUTION: Not suitable for use in most gasoline-powered automotive  13 Oct 1995 It says not to use API SF, but that it is okay to use API SF,SG. It also says never to use non-detergent oil, or oils labeled API SA, SB, SC, SD,  Oils meeting API SL requirements have been tested according to the American Chemistry Council SF, Obsolete, For model year 1988 and older engines. Choose the engine oil you need according to API SF classifications. Here you will find suitable Car oils by numerous manufacturers with API SF specifications.

Exerpts from the link: Standards SA to SF are considered obsolete. The current standard is backservicable to these standards. S G = Service typical of gasoline engines in passenger cars, vans, and light trucks beginning with the 1989 model year S H = 1994 provides improved control of engine deposits,

Gasoline Engine OilRating: SAE 40, API SF/CD SKU: 1 Liter, 4 Liter, Pail, Drum. GASOLINE ENGINE OIL is a premium quality motor oil for gasoline engines. Straight 40 Engine Oil Allfleet API:CF/SF. 0 out of 5. ( There are no reviews yet. ) £57.60 – 

Motor oil is rated many ways. One is the API rating for gasoline motors. SJ is better than SH, SH is better than SG, SG is better than SF. etc. So as long as the letter comes later in the alphabet it is ok. However the most modern oils ( e.g. SM) are not suitable for old engines.

28 May 2018 API has discontinued licensing engine oils against API SF and it is considered to be an obsolete specification. Engine lubricants claiming to meet  If an automotive owner's manual calls for an API SJ or SL oil, an API SN oil will provide full protection. For diesel engines, the latest category usually - but not  adequate protection against build-up of engine sludge, oxidation, or wear. SF. Obsolete. CAUTION: Not suitable for use in most gasoline-powered automotive 

Engine oil which has been tested and meets the API Motorcycle oils commonly still use the SF/SG standard 

The American Petroleum Institute, API, is a U.S.A trade association for the oil and natural gas industry. It reunites different actors in the production, refinement, distribution and many other activities around ptroleum. API CJ-4 oils exceed the performance criteria of API CI-4 with CI-4 PLUS, CI-4, CH-4, CG-4 and CF-4 and can effectively lubricate engines calling for those API Service Categories. When using CJ-4 oil with higher than 15 ppm sulfur fuel, consult the engine manufacturer for service interval. The American Petroleum Institute (API) is the only national trade association that represents all aspects of America’s oil and natural gas industry. Our more than 600 corporate members, from the largest major oil company to the smallest of independents, come from all segments of the industry. The composition of engine oil is always evolving as new discoveries are made, so the defined classifications follow suit with the evolution of oil quality. The American Petroleum Institute (API) defines specifications for engine oils, such as SG or SE. I have read that SF rated oil is fine for flat tappet cam engines. However, SF rated oil is now obsolete. I have searched the net to try and determine what the SF rated oils had in the way of ZDDP (Zinc/Phosphorus) and found nothing.Does anyone have info on what the actual SF specs were, Motor oil is rated many ways. One is the API rating for gasoline motors. SJ is better than SH, SH is better than SG, SG is better than SF. etc. So as long as the letter comes later in the alphabet it is ok. However the most modern oils ( e.g. SM) are not suitable for old engines. In summary, API SJ represents an improved quality level of motor oil vs API SH. API SJ oils can be used in any applications where SH oils were being appropriately used. So if your owner’s manual calls for an API SE, SF, SG or SH motor oil - API SJ will work just fine.

quality engine oils for gasoline- for diesel-engine service fall under API's SF. Obsolete. CAUTION: Not suitable for use in gasoline-powered automotive 

GP Petrol Engine Oil 20W50 SG/SF/CF is formulated with with high quality base oil which increase the performance & life of Car Engine. 15 Jan 2015 “Energy Conserving” Motor Oil Labels & API Licensing. Claims Based on ILSAC Seq 6_ and ASTM D7589 Tests. API SF (1988 and older) vs 

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