I have a 89 honda civic. The oil light comes on after 20-30 minutes of driving it. I ran a engine flush through it, then changed the oil and filter plus I added a quart of lucas oil treatment to it. Drove again and after 30 minutes of driving it starts running like it has no oil and you can really here the valves shattering like Im getting ready to throw a rod! Please any suggestions
Could be the oil pump is faulty.
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