I imported a '04 S40T4 from USA and need to change coolant. Current coolant is yellow, which I guess is Zerex G05 but in my country the only one wth hybrid tech available is Motul Inugel Expert. Since when draining coolant 3 qts of Zerex G-05 will remain in the cooling system I would like to know if is it safe to mix both coolants. Thanksfor any advice.