Originally Posted By: kschachn
Originally Posted By: Pontual
Back in the 70s, my father used to run more than 30,000 kms on the ocod filters (20k miles) and oil. Carbed cars. No wonder some engines didn't went past 160k kms (100k miles). Oil was Shell Super 20w40, maybe the heydays to todays Formula or PYB.
What is it about a carbureted car that makes a difference for the oil filter?
Well carbed vehicles don't have full time, on time, fine tuning, that 02 sensor and maf sensors gives to the calculator to remap afr. They don't adjust for atmospheric changes or pressure height changes encountered in a trip, as efi does. And they get out of calibration much easier. The idling excess fuel is exagerated. Intake restriction by dirt air fikter make a rich condition, they use choke. Manifold spraying, makes the ugly droplet fueling ... So the contamination of oil and detergent depletion is much worst than efi cars, making a dirty engine and that ruins oil filters. I thought everybody knew those differences.
Originally Posted By: Pontual
Back in the 70s, my father used to run more than 30,000 kms on the ocod filters (20k miles) and oil. Carbed cars. No wonder some engines didn't went past 160k kms (100k miles). Oil was Shell Super 20w40, maybe the heydays to todays Formula or PYB.
What is it about a carbureted car that makes a difference for the oil filter?
Well carbed vehicles don't have full time, on time, fine tuning, that 02 sensor and maf sensors gives to the calculator to remap afr. They don't adjust for atmospheric changes or pressure height changes encountered in a trip, as efi does. And they get out of calibration much easier. The idling excess fuel is exagerated. Intake restriction by dirt air fikter make a rich condition, they use choke. Manifold spraying, makes the ugly droplet fueling ... So the contamination of oil and detergent depletion is much worst than efi cars, making a dirty engine and that ruins oil filters. I thought everybody knew those differences.
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