Wondering if anyone would know where to start. Over the course of about a week the car is going from the max mark to the min which is when it's triggering the low coolant warning. The thermostat and water pump has been replaced and it sat at the dealership last week for around 4 hours being pressure tested and no leaks were seemingly found.
I've read that the cap can sometimes be faulty - could this be the issue before it heads back off to the dealers?
I've read that the cap can sometimes be faulty - could this be the issue before it heads back off to the dealers?
