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Oto treść notatki subaru kierowanej do amerykańskiej sieci dealerskiej, która kwestionowała stosowanie syntetyków 0w-20 do nowych siliników FB25 w foresterach MY11 (oryginał w formacie graficznym/skan jest/był na forum subaruforester.org i został automatycznie przetworzony na format txt - może są literówki): 2011 FACTORY-FILL SYNTHETIC OIL AND MAJNTENANCE INFORMATION We have received many questions and concerns about Subaru changing to synthetic motor oil for some 2011MY vehicles. The usage of synthetic oil is not new to the automotive industry but is new to Subaru. Many customers think that oil is oil and "as long as J have enough oil in my engine everything is fine." The only thing correct about that statement is having enough oil in your engine, because oil is no longer just oil. With the ever-changing technology in the automotive industry, we can no longer U~ tho:-same conventional type of oj] that was llSed in the past. New government requiremo:-ms for reduced o:-missions and increased fud mileage have automotive o:-ngineers and manufacturers looking at all possible ways to help meet the~ requirements. Motor oil is no exception. Motor oil is just now atching up to mechanical and technological changes that have taken place over the past decade. 111e Genuine Subaru Motor Oil Program for synthetic SAE 5W-30 and synthetic SAE OW-20 oils have been recently offered and well received by our dealers. What are the advantages of synthetic motor oil? Superior protection against oil breakdown for a cleaner running engine and long engine life. Increased protection against varnishing and deposits. More tolerant to high heat in turbo-charged engines. Superior lubrication, reduces engine wear across the operating temperature range and optimizes fuel economy. Reduces oil loss due to evaporation and burn off. Low viscosity (OW-20) improves fuel economy, reduced friction and increased power. The use of SAE OW-20 synthetic motor oil is required for aU services performed on 2011,\1Y non-turbo Foresters. The use of this thin viscosity oil on this engine is critical due to the tight engine design tolerances and to maintain overall optimum engine performance. SAE-5W-30 synthetic oil is required for all 2011MY Turbo-charged engines (aU models), and can also be used on 2010MY and prior turbo and non-turbo modds. Please refer to the list below for oil change intervals and part numbers: Model Year Model Oil Type Required 1st oil change 2nd oil change Subsequent oil changes 2011 Forester non-turbo OW-20 synthetic 3,000 7,500 7.500 2011 All Turbo vehicles 5W-30 synthetic 7,500 - 7.500 NOTE: We have received some inquiries on the Techline about the Forester N/A first oil change interval at 3000 miles. This is due to the new en,gine for the 2011MY Forester which utilizes a timing chain instead of a timing belt. Jest więc to uzasadnienie również techniczne dla stosowania olejów 0w20 dla tej konstrukcji silnika. Nie jest dla mnie jasne czy ta wymiana na pierwsze 3000mil to przez silnik z łańcuchem rozrządu czy sam łańcuch, ale tak czy siak wymagana... -- Cz lis 24, 2011 10:45 am -- W związku z wprowadzeniem nowego modelu Subaru Impreza z sinikami FB20 na rynku amerykańskim okazuje się, że instrukcja zaleca stosowanie oleju 0w20 również do silnika FB20 tak jak wcześniej do FB25 w Foresterze MY2011. Cytat z instrukcji do Subaru Impreza MY2012: "0W-20 synthetic oil is the required oil for optimum engine performance and protection. Conventional oil may be used if synthetic oil is unavailable. *: If 0W-20 synthetic oil is not available, 5W-30 or 5W-40 conventional oil may be used if replenishment is needed but should be changed to 0W-20 synthetic oil at the next oil change." Nie jest więc w szczególności prawdziwa wyżej prezentowana sugestia jakoby olej ten wymagany był jedynie do silników FB25.