If your 2002 Infiniti G20 is burning about a quart of oil every 1,000 miles with no visible leaks and good compression, the issue may be related to worn piston rings or valve seals, which can allow oil to enter the combustion chamber. Additionally, the engine's PCV (Positive Crankcase Ventilation) system could be malfunctioning, causing excessive crankcase pressure and leading to increased oil consumption. Another possibility is that the oil itself may be breaking down or thinning out due to age or heat, contributing to increased burn-off. Regular maintenance and inspection can help identify and address these issues.
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