Is 5w40 or 5w30 suitable for the h6?

[VonBethany]

According to the maintenance manual, the h6 should use 5w-40. Specific instructions are as follows: Each car comes standard with a maintenance manual. Refer to the maintenance manual in the car. New cars usually choose oil with slightly lower viscosity, so add 5w-30. As the car ages, gradually choose oil with slightly higher viscosity because older car engines experience more severe wear and require oil with relatively higher viscosity, such as 5w-40. Precautions for using oil are as follows: 1. Do not lack oil: Oil is extremely important for engine operation as it serves two major functions: lubrication and heat dissipation. Therefore, never let the engine run low on oil. 2. The oil level should be slightly below the mark on the dipstick: The oil level should be slightly below the mark on the dipstick, and do not overfill. Excessive oil not only increases the crankshaft's rotational resistance but also reduces the engine's output power. Moreover, the excess oil may enter the combustion chamber and participate in combustion, leading to the engine burning oil, emitting blue smoke, and even increasing fuel consumption.