Hi there, so I bought my first car a couple months ago. As routine maintenance I checked the oil level and it looked a bit on the lower end(actual oil itself looked to be in good shape though), so I went to fill it up with half a liter or so of oil. Upon unscrewing the oil fill cap I noticed the f…

That usually means the vehicle isn’t driven long enough to drive moisture out of the engine. Also, if the PCV valve is stuck closed can cause that. Tester

There’s water vapor and oil mist in the engine while it’s running. You’ll get some mixture and deposit on the inside of oil cap, especially in cold weather (condensation.) If you are losing coolant there could be a leak, maybe even head gasket leak, so keep an eye on that.

Thank you so much for the quick replies, I’ll keep an eye on coolant levels and try going for a longer drive before checking it to see if it’s moisture.

Is this mainly used for short trips?

[image] Mr_IO: I’ll… try going for a longer drive before checking it to see if it’s moisture. I suggest that you first clean the oil cap, change the oil, and then take a few long drives before you check it again.

My guess, you’ve got coolant leaking into the oil. Good ideas above to test first, but if those don’t pan out suggest to ask your shop to do a coolant pressure hold test. OOPs, took a look at your vdo, and what I’m seeing there doesn’t look like there’s much of a problem. Much less likely than I…

Yeah okay my car is due for an oil change anyway so I’ll just go ahead and do that, then check it again after a few long drives.

I don’t know what you call a long drive but you should check the oil level at least once a week and every fill up of fuel until you have an idea of how much oil this used vehicle uses .

[image] Mr_IO: my car is due for an oil change anyway Since you are new to car ownership, I’ll add that changing the engine oil is probably the single best thing you can do for your car. You might decide to defer some maintenance items but suggest to not defer oil & filter changes. Best of …

If there was coolant leaking into your oil, the oil on your dipstick would be milky.

Make sure the oil cap is cleaned after the oil change so you can monitor the situation with a clean slate.

Oil is milky just around the fill cap

Maintenance/Repairs

George_San_Jose1 March 28, 2022, 11:06pm 15

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Oil is milky just around the fill cap

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