2000 BMW 528i Q&A
2000 BMW 528i Question: How long do you think I can keep driving the car with this leak? See details.
I confirmed a head gasket leak by sucking coolant out of cylinder #3 with a turkey baster. Facts. Only cylinder 3 is affected. P0303 misfire on cold start. Exhaust steam for a few minutes until warm. It's accumulating about 1/16th of an ounce of coolant every 24 hours. The coolant loss does not move the indicator in the expansion tank. Block Tester indicates zero carbons in the cooling system. Dipstick indicates no coolant in the oil. Car is driven only 2,000 miles per year. I just finished a 500 mile Interstate road trip with no problems, and the coolant temp was steady at 99 degrees C (210 F). - jeffcurran
I would not advise you to drive or even try to start engine. At some point, should the leak get worse it could fill the cylinder enought to do what is known as hydralock. It means a liquid cannot be compresed like air can. A liquid should never be in a cylinder and it could lead to major damage to piston, valves, block, or head. - milesauto
do not drive car it can cause major eng damage - globalhelper