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Castrol is the best brand and synthetic is the best type of oil, but it is expensive for the synthetic. I would use regular 10w30 Castrol and put Duralube in it every 50k miles. Change oil regularly. The Duralube is the every 50k mile.

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16y ago
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Q: What is the best oil for a 2002 impala with about 113000 miles?
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