Hi
I have a 2003 , 1.8 petrol w203,with 37000 on clock , the oil I use when I change is 0/40w , do I stick with this oil for the rest of its life or do I move onto a thicker oil say 5/30w (both synthetic) as mates say its a oil (0/40w) for the early part of a engines life ?
Cheers
Jon