Question about Pontiac Firebird
GM will not make a recommendation for a car with 200,000 miles-when new, it probably called for 10w30, and if it does not smoke you could stay with that. If it does smoke, you might consider going to a heavier weight like 15W-40 or 20W-50, but be careful if you live in a cold climate-20W-50 especially.
For gas, if it does not knock, use 87, using higher octane will only waste money.
Posted on Jan 03, 2011
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Posted on Jan 02, 2017
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