given the options (not many, though. Authorized proton service centers make u use either Petronas or Shell to cover warranty), which type of oil should i go for? continue with Mineral or use the Semi-synthetic?
currently with my conservative driving culture, 60% highway 40% city, i am getting about 10km / liter. (which translates to RM 0.18/km).
Howdie..cps amigos....my cps is abt 17k KM been using Castrol Magnatec 10-40W since the first scheduled service till now..everything still quite smooth besides the oil gettin darker after 13k when i pull out the dip stick for a look....
Dear sifus, abt the oil gettin darker...is it that the effect of engine oil cleaning the engine? as i notice that when around 5k - 10k the engine oil is still quite yellow golden...
anyway...is there any significant improvement to use a better brand engine oil? such as Shell or Mobil...
btwn Castrol, Mobil & Shell [Semi-S]...which is the more preferred popular choice?