Sounds like you have a leak and need to keep it high to get from point A to point B while not getting too low. If it's that bad you need to fix the leak. As for how high can you go, check the owner's manual, look at the level after an oil change as typically I see it 1/4-inch above because they will allow a quart for the filter (Motorcraft FL-1A), but it only holds 3/4 of a quart. Certainly you are running too much if oil consumption increases, it starts leaking out seals, or the oil starts foaming from being beaten by the crankshaft. Foaming can destroy your engine because it leads to air entrapment in the oil pump and lines--bad news. But I would think these are caused by extreme overfills.quote:
Originally posted by ZmOz:
How much do you guys think is too much? I'm thinking I should just put a little extra in my 4.0 jeep engine until it stops putting most of it on the freeway.
It definately requires some fixing, but it's not undriveable - yet. I don't drive too many miles, so it's not that hard to add some more oil, I've usually got the hood open for something else anyway.quote:
Originally posted by TallPaul:
Sounds like you have a leak and need to keep it high to get from point A to point B while not getting too low. If it's that bad you need to fix the leak. As for how high can you go, check the owner's manual, look at the level after an oil change as typically I see it 1/4-inch above because they will allow a quart for the filter (Motorcraft FL-1A), but it only holds 3/4 of a quart. Certainly you are running too much if oil consumption increases, it starts leaking out seals, or the oil starts foaming from being beaten by the crankshaft. Foaming can destroy your engine because it leads to air entrapment in the oil pump and lines--bad news. But I would think these are caused by extreme overfills.quote:
Originally posted by ZmOz:
How much do you guys think is too much? I'm thinking I should just put a little extra in my 4.0 jeep engine until it stops putting most of it on the freeway.