Проблема с вискозитета на маслото явно е свързан и със старт/стоп системата, коята върви с 1NR-FE /1.33 за Yaris, Auris, Urban Cruiser/ в някои държави. 0W20 се препоръчва и за Prius III.
Причината е вероятността за чест старт на двигателя извън работна температура. Това е официален отговор на Тойота на подобен въпрос:
"0W-20 is the type of oil used during the manufacturing process, and is, I am told, the recommended oil for third-generation Prius (as stated in the manual). The reason for the change is that, in comparison to 5W-30 and 10W-30, it provides better engine ’startability’ in cold weather, which in turn improves engine performance, fuel consumption and emissions in cold weather conditions. This may prove particularly useful, and be more obvious, to you during shorter journeys, when the engine does not have a chance to reach its normal operating temperature. Viscosity wasn’t mentioned, Pete, but you may well be correct.
All that said, the recommendation of 0W-20 does not mean that using 5W-30 or 10W-30 will cause long-term damage to your engine.”
Това са препоръчителните масла:
Oil Grade Oil Viscosity (SAE)
API grade SL "Energy-Conserving". 0w-20 5w-20
SM "Energy-Conserving" or ILSAC multigrade engine oil 5w-30 10w-30
API grade SL or SM multigrade engine oil 15w-40 20w-50
Toyota genuine motor oil is available in:
08880-82652 Eng Oil 0W20 TGMO 1 Litres pack API SM/SL; ILSCAC GF-4 0W20
OR
08880-82533 PREMIUM FE Eng Oil 5W30 1 Litres pack API CF; ACEA A5/B5 C2 5W30
Така че споко - колкото повече караме колите си - толкова по-малко проблеми ще имаме с "непрепоръчаните" масла
