Mercury Cougar 1999 — technical service bulletin
Bulletin 982316 · NHTSA communication 603763 · issued Nov 23, 1998
Technical service bulletin
communication type
Engine and Engine Cooling
component
1999
model years
1
vehicle entries
Official summary
Premature deterioration of the cooling system resulting in potential leaks and / or component failure may occur if conventional premium engine coolant (green-colored) is mixed with new extended life engine coolant ( orange-colored) found in the vehicle. *yc
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.