5-Series (E12,E28, E34, E39, E60)Chat relating to the BMW 5-Series of all generations. Specific models include: BMW 518, BMW 520, BMW 520i, BMW 530i, BMW 528i, BMW 530i, BMW 518i, BMW 524d, BMW 525i, BMW 525e, BMW 528e, BMW 540i, BMW 535i, BMW 520d, BMW 525td, BMW 525d, BMW 530d, BMW 525i/xi, BMW 530i/xi. (BMW 5-Series Forum)
went out tonight to start the car before running to the store and the low coolent level cam across the display. poped the hood and saw coolent dripping from the lower drivers side of the radiator.shut the car off and let it sit for a couple of hours while I went out.came back and started the car again to see if I could pin point the leak, no warning light and now more coolent leak.Has anyone had this happen to them and might be able to remidy the problem.
check all the hoses thoroughly. also, check the place where the expansion tank (place where you pour coolant in) and the rad. come together. bootom of it is a common place for leaks as it only has one thin rubber o-ring to keep the coolant in.
Check about an inch down from the upper radiator neck........there may be a hairline crack. It won't show a leak if the coolant level is low. Fill it up, run the car, and as it heats up, the coolant will expand and pressure the system. It'll leak then.
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