SHELL RIMULA R2 SAE 50 1L
-Engine Cleanliness. Unsurpassed sludge protection. ...
-Less Top Up. Low-evaporation formula helps save time and money. ...
-Fuel Economy. For better fuel economy.
-Synthetic oil has molecules that are equal size.
-More uniform oil molecules equals better lubrication.
-And that equals better engine performance.
-Synthetic oil stays slippery at colder temperatures than regular oil, and is therefore less likely to cause engine problems when started in cold climates.
Shell Rimula R2 Energised Protection oils use proven combinations of additives that react to the the needs of your engine. They feature an enhanced acid-control system for added protection and long life. Each dedicated additive releases its protective energy when needed to ensure reliable and consistent protection against deposits and wear with tough long lasting action.In a sealed container, it should be fine for 3 to 4 years. And will be fine if you shake it before use, even years later. Once opened, it should be used during the year, although it will be darker from oxidation as the year goes on.