[Greg123456]

I add maybe a quart every other month. More means you have a leak somewhere.

[nickcarraway]

You don’t empty the used oil?

[Paladin2]

Could be ring blow-by.....

[Conceptually a leak but doesn’t leave spots on the floor.]

[trebb]

The last car I had where I had to add oil between changes was a ‘61 Chevy Bel Air

[TexasGunLover]

I add maybe a quart every other month. More means you have a leak somewhere.

Any loss means you have a leak.

[southernindymom]

My dad only changed the oil when we went on a vacation..... which in the 22 years I lived at home before I got married was 3 times that I can remember.