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That depends entirely on the condition of the engine. If the bearings are not worn, you would do better with a lighter weight oil (lower viscosity). If the bearings are starting to wear a little, you'll need something with a little higher viscosity, such as 10W30 or even higher.

The oil pressure gauge is the best indicator of whether you should be using a higher viscosity oil. If the oil pressure drops significantly when the engine is hot and at an idle, switch to a higher viscosity oil. If the oil pressure stays up, don't use the higher viscosity.

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14y ago
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Q: Is 10w30 OK to use in a 1996 Saturn?
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