i let it sit overnight and was going to warm it up and check it again, but decided to check it first and i'm a little confused. i don't want to drive this if it will mess it up, so please advise.

it has been sitting overnight. the block heater has been plugged in for a few hours. it is facing downhill, not a terribly steep hill. i checked the fluid and it is 2 inches or so above the max level! i know the hill and the temp effect this, but what is the deal? is it ok to drive this? yesterday i only added about 1/2 to 3/4 quart.

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1980 300D, 128K