If top up $20, I prefer Mobile1 gold cos more expensive than Amsoil.
BTW. 
Hi Jazz,
Serious? Mobil is btr than Amsoil?
my 4th service i done at KL at RM198 i thk (excl labor cost).
After chg of EO, the car seem smoother, but wks later, seem back to normal leh?
So, to me, make no diff leh.... So how?