My 1999 4.6HSE 67k miles RR is overheating and losing coolant. Just did it 1st time today on a 40mph run towing a horse box, 24C outside temp, aircon on.
Knowing my luck its probably a cracked block.... but I was wondering if there is a definitive guide somewhere to diagnose it?
Something like a flow diagram or something?
Rather than randomly replacing radiators, thermostats etc.
Also, I know the importance of a 50-50 coolant mix, but a lot of people are asking what colour antifreeze - does this matter? Or is it just 'don't mix red and blue'?
Thanks in advance.