Change oil?

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so di po tutuo na napapanis in a way ang once na nagamit na siya?

in a way it is correct. once you put it in the engine, it gets contaminated. contaminated oil gets "spoiled". for storage purposes, it is adequate, however, once the car gets used again, kelangan na sya palitan.

Need suggestion halimbawa yong car di masyadong nagagamit within 6 months paandar lang 3x a week then some ikot-ikot lang in subdivision. Ano ang tamang sundin sa pag change oil running time or kilometer or monthly basis or depende sa quality ng langis na makikita sa dipstick?
4ja1 engine older model. more power to all...TIA

it falls under severe driving, contrary to common sense.

too much fuel dilution, and the oil doesn't get the chance to reach operating temps (no chance to get rid of the fuel and/or other contaminants)

you'll have to drain and replace the oil sooner.

an alternative is to use it regularly for long drives. going out of town on weekends will help. masaya pa!