No the coolant is fine.
Had the oil changed 3 days ago,they checked
the coolant levels and said it was fine.
Am surprised that in 8000 miles the oil
was only down about 3/4 of a letre.
Milage is good at 38 mpg(imperial)highway.
Check mileage every tank(calculated).
New oil is Pennzoil Platinum 5W-30.
Will watch it closely in the future for
any colour change.