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)
I have replaced 2 radiators on 2 different 540's, E34 and E39. I was advised they should never be repaired, cement-glued or epoxy-welded. The engines operate at very high temps and pressure, especially in summer. If the repair should fail, you risk losing the whole engine. In my case, the radiator for the E39 costs about $200 compared to a $4000-$5000 engine.
Cosmos, I couldn't have said it better myself. One more thing to remember blackdog, is that basically everything but the cores of the bimmer radiators are PLASTIC. Don't repair, buy new. If one place is leaking now, more will develop soon.
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