Radiator end tank leak

[nahvkolaj]

Okay I was thinking my 3.0i config with the reservoir attached to the radiator, but end tank means radiator end tank duh. My bad.

That looks like a new radiator. But more expensive, but 1200 still seems like a lot for that unless it comes with a full cooling system refresh.

[EODguy]

Originally Posted by X5goldie

This is where the leak is. No signs on the reservoir cap.

Is there a spray epoxy of some sort to get by?

Will this blow up and start gushing on the highway?

Looks like you need to replace the rubber o-ring between the tank and the header plate. Any normal radiator shop will have bulk crenelated sealing strip. I used to do this back in the late 80s early 90s. Most of the cost is from removal/reinstalling the radiator.

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[BimmerBreaker]

The radiator is damaged, that is a leak where the radiator core is crimped onto the plastic end tank. A somewhat common failure on cheap quality radiators, but happens to good quality radiators too. Exacerbated significantly by running with too much coolant as this causes an over pressurization of the system and the hot side of the radiator sees a lot of that pressure.

I would do the repair yourself. It's not difficult at all and the X5 is pretty much completely self bleeding. It's about a one hour repair job if you know what you are doing, a few hours if you don't. You may need the special fan wrench tools, but other than that it doesn't need anything special.

$1200 is absolutely a ripoff for that repair job.
Parts cost for radiator, radiator hoses, water pump and thermostat is $360...

[Fifty150hs]

Originally Posted by andrewwynn

UV dye to trace exact leak. You might have a simple leak from a hose dripping down the side.

UV in my coolant system at all times. Easy to find small leaks right away.