How do you read the oil dipstick on BMW 528i series?

To read the oil dipstick on a BMW 528i, first ensure the engine is off and level. Remove the dipstick, wipe it clean with a lint-free cloth, then reinsert it fully before pulling it out again. Check the oil level against the marked indicators on the dipstick; the oil should be between the minimum and maximum marks. If it's low, add the appropriate oil type until it reaches the optimal level.