Stock # 221030 ‘01 Chevy LQ4 6.0L LS Engine 72K Miles

[@Langloisbati]

Hello I own a Chevrolet express 6.0 LQ4 with 90,000 miles, I live in France in a region where the climate is temperate, I do 6000 miles per year, I drive mainly in the summer, and I tow a 6000 lbs trailer, should I stick to the oil recommended by the manufacturer 5W30 or can I use a 5W40 for example???

[@bogbrookauto]

With that low mileage... use the factory recommended 5W30. SAE 5W-30 means the oil is a thicker 30 weight when cold and a 5 weight when it's warm. Hence the 5W rating.