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In 2018, the Buick Encore requires SAE 5W-30 oil. Buick suggests using fully synthetic oil for optimal engine protection when it's time for an oil change. There are two main types of oil: conventional, which is made from petroleum and synthetic, which is engineered in a lab. Synthetic oil offers superior protection for engine components and lasts longer compared to conventional oil. Typically, synthetic oil is good for around 7,500 miles between changes, while conventional oil needs to be changed every 3,500 to 5,000 miles. Make it a habit to regularly check your oil to ensure it's in good condition and free from debris.
My 2018 Encore uses 5w-30 oil based on the information on the oil filler cap. Although the engine is the same for all models, there are variations in the recommended oil types such as 0w-20, 0w-30, or 5w-30. There are two types of filters available as well. If you have the Hengst cap (black), the filter does not have a check valve. On the other hand, if you have the UFI cap (brown), the filter includes a check valve with a spring on top. It's important not to confuse these filters. I personally have the UFI cap (brown with a check valve) and had difficulty locating it compared to the more common filters.
For the 2018 Buick Encore, you should use either 5w-30 oil that meets dexos1 standards or 0w-30 oil.
The 2018 Buick Encore, an SUV with a 4-cylinder engine, offers six distinct trim levels. These include the 1SV, Preferred, Preferred 2, Essence, Sport Touring, and Premium trims. All of these trims necessitate the use of either 5w-30 meeting dexos1 specifications or 0w-30 oil.
The book recommends using 0w 20 oil.