Help, oil overfill

[A26B]

It depends on how high the oil level is, i.e. how much it is overfilled. There have been a few reports of severe engine damage resulting from oil changes being made by shops & dealerships with no experience on the ZR-1 LT5 engine. Simply draining hot and refillinjg to the stated "capacity" would be nearly 3 qts over-fill. Even draining hot & refilling to the "change" volume would result in about 1 qt overfill.

Correctly checking oil level is a common issue with the LT5.
The best method is to check the oil level, before starting, after sitting overnight. The LT5 retains a lot of oil on the topside and drains down slowly. A correctly filled LT5 will show low when checked "hot".

Not knowing how much the overfill actually is, the safe thing to do would be to let it sit overnight, check the oil level & drain or suck out until the level is correct, WITHOUT STARTING the engine. Don't expect to add a qt of oil & see it show up on the dipstick in a couple of minutes. You cannot remove oil from the oil fill cap. As stated by an earlier post, you can remove with a dipstick oil vacuum.

If you must drive the car somewhere to drain oil, keep the rpm as low as possible. Remember, if you do this, the engine will be hot. Leave the oil level at the 1qt low mark, drive it home & let it sit overnight. Add 1/2 the amount shown "low" on the dipstick. Check again the next day. until it reads full when dead cold.