My ATF cooler failed a couple of weeks ago, leaving coolant in my ATF and ATF in my coolant. (This despite replacing the cooler a year-and-a-half ago to prevent just such a failure -- aarrggh.) A new cooler has been installed and all of the affected fluids have been flushed and replaced, and in particular the coolant's been drained twice and replaced. Yet I can still see a brown film in the coolant expansion tank, and I'm still having trouble with the coolant level warning light going off. My mechanic's current theory is that the ATF residue changes the viscosity of the coolant sufficiently to cause the sensor to trip. Is there something more we can be doing to get the ATF residue out of the coolant? Is there any way to really clean out the cooling system? Mark Pry 1990 GL |
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