Re: Oil Filter

Posted by Fish'n Jim On 2023/10/10 16:35:05

These reservoir types need the reservoir drained and cleaned out after taking out the filter element or you're just reintroducing contaminates.
It's one of those it depends questions. If it's stored in a dry place and not driven much then rusting is not that much of an issue. There's always one or more valves in the open positions so it'll breathe a bit. Water is part of combustion so have to warm it up to get the water out the exhaust system.
If it's never been rebuilt and has sludge in it, then that's another case to watch and more frequent doesn't hurt with modern oils, since more detergents. They didn't even put detergents in the early motor oils, aka "ND" or straight weight.
If you're regularly driving and moderate speeds, 3-4000 is probably good. A "partial flow" filter isn't going to see the same amount of flow as a "full flow" filter so the element won't catch as much per mile. What I do when I get a new vehicle is check the oil every 1K for color and lubricity until it needs changed then round down and use that interval. It'll tell you if it's getting used up, dark and gritty.
But today you get free oil changes, synthetic oil, and some have a oil checker/monitor tied to the computer so only works on the older cars/diesels.
Depends how long you want motor to last too. At 3000 or less interval you're probably at max life because they oil isn't close to used up when changed.