Jaguar XK8 1997 — technical service bulletin
Bulletin 30311 · NHTSA communication 10011479 · issued Jun 1, 1997
Technical service bulletin
communication type
Engine and Engine Cooling
component
1997
model years
1
vehicle entries
Official summary
Poor heater performance - coolant specification change - service action s 813. *tt
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.