If it is indeed stop leak, I'd fill it with straight water with some radiator flush in there, run it to temp then drain it again, then do the flush as described in my last post. Flushing the radiator is easier then the engine of course.

(I miss the days when I could just pull the thermostat from the housing and run a garden hose into the radiator with the engine running and the upper hose pulled off, flushing the living hell out of a system...)

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"When you do things right, people won't be sure you've done anything at all" (Bender, futurama)

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You think professional is expensive, just wait until you pay for amateur.

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Examine what is said, not who speaks.

X5 pics

RIP 4.6is.....

2003 4.6is