Re: Oil Filter

Posted by TxGoat On 2023/10/10 16:40:57

If you drive the car regularly for half an hour or more at a stretch, (more is better) you can easily go 2,000 to 3,000 miles between oil changes using conventional multigrade oil. In warmer weather and with plenty of miles driven after startup, 4,000 miles would be no problem. I believe the pre-war 120s with no oil filter were expected to go 2,000 miles between changes under fair to good driving conditions. Oil today is better than what was available then. If the engine has old deposits inside, then more frequent changes might be indicated, but it ought to go 2,000 miles easily. I run synthetic multigrade oil in a Model T Ford in very hot weather at highway speeds with no issues whatever. I'd expect a Packard engine to thrive on it, provided it was internally clean and in fair to good condition. But conventional multigrade, like 10W30 or 20W50 does very well under most all conditions. A tight engine would probably do best on 10W30.

A 20 mile trip (or more)several times a week in anything but severely cold weather = very good operating conditions for the engine and the rest of the car, assuming all systems are in good order.