2000 Pontiac Bonneville motor oil

2000 PONTIAC BONNEVILLE
99,000 MILES • 6 CYL • AWD • AUTOMATIC
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GENERALMOTORS
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This owners manual recommends 10-W30 motor oil. Dealerships and mechanics tell me 5-W30 is alright to use, and they make oil different now than they used to. ???? Thank you.
Aug 22, 2009 at 1:32 PM
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