Checking oil
Thread Starter
Heel & Toe
Joined: Mar 2020
Posts: 20
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Checking oil
I have about 4000 miles on my 2022 c8. I was checking the oil with the engine running. Is it normal for the oil cap to be under pressure with some oil spitting out when unscrewing the cap? This is the only car Ive had where you have to have it running to check. I thought there might be a little too much oil. If there was too much would the pressure gauge show it? After I thought maybe I should have shut off the engine then unscrew the cap then restart the car. Thanks in advance.
Race Director
Joined: Mar 2007
Posts: 11,234
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I have about 4000 miles on my 2022 c8. I was checking the oil with the engine running. Is it normal for the oil cap to be under pressure with some oil spitting out when unscrewing the cap? This is the only car Ive had where you have to have it running to check. I thought there might be a little too much oil. If there was too much would the pressure gauge show it? After I thought maybe I should have shut off the engine then unscrew the cap then restart the car. Thanks in advance.
2. I thought there might be a little too much oil. - what did the dipstick say? The manual says if overfilled you need to find a way to remove some oil.
3. If there was too much would the pressure gauge show it? No.
4.After I thought maybe I should have shut off the engine then unscrew the cap then restart the car. Don't run the engine with the tank cap removed. Run the engine til warm. Check the oil with the dip stick. If oil level is between the marks, you are good. If it needs oil, stop the engine - add a little - check again. Don't overfill.
E-Ray, 3LZ, ZER, LIFT
Joined: Sep 2007
Posts: 34,842
Likes: 12,285
From: NE South Carolina
As has been noted by others, best to wait until it says add (which I suspect is like the C7 dry sump which was when it was one full quart) and add if needed with the engine off! NO reason to try to keep it at the MAX level. And that is the proper word "Max" not "Oil Should be at Level."
