my XJS 6.0 V12 since new, when the engine is in temperature, from spring to summer the gauge indicator hand stops at N’s right end. During hard winter, it stays on N.
During the last w-end, with 33°C of external temperature, after some pull up to 180-200 km/h the gauge indicator has gone beyond the N, but less of 3/4. Cruising at 130km/h, it returned at N’s right end.
The coolant has been changed in April.
The question is: which is the behaviour of Your V12 6.0?
Is it normal? Or shall I have to change thermostats?
The car has 68k km.
The below picture taken from Web it is similar to what happened last w-end at high speed.