I just purchased a 2002 Volvo S60 with the 2.4T engine. It has 88000 highway miles on it and has always had a dino oil in it. I would like to switch to a synthetic oil. Could you assist me in choosing the correct weight and brand of oil please? I do use 0w-30 GC and Gold Castrol syn in my other cars but didn't know if this would be a good choice in this car with this amount of miles. Thanks!