O7 jaguar stype started leaking coolant and then stopped. It's overheating driving more then 15 minutes.

 

If you continue driving while the engine is overheating you are doing serious damage! You MUST find where the coolant is leaking from (hoses, coolant reservoir, water pump ….?) and have it properly repaired.

 

With the engine cold, use a cooling pressure tester to pressurise the cooling system to 1 bar. Check for leaks and evidence of dried coolant to find the leak(s).

If the engine is operated under conditions that cause it to overheat, head gasket failure is the likely result.

 

Ok. Brief history of problem and year and model and engine will help us alot to help you