1980 BMW 320i Base 4 Cyl 1.8L
Where is the drain plug on the Behr Auto Radiator?
I replaced the original BMW Radiator back about 94 with a Behr. I haven't had to drain it since but I want to drain it now. I looked on the bottom and found two knurled plastic knob type caps. I unscrewed them but no fluid came out. Radiator is filled with water (rusted). The reason I want to drain it is to replace the water, ( which I believe steams out from the cap after a few days and I have to constantly replace), with 50/50 Coolant which should reduce the steaming.
Spoon Sports 4/10/2011
Probably the drain plug hole is plugged with rust. Because that is the drain hole, anyway what i would do at this point is remove the radiator hang it upside down to drain the water.