QUOTE(sbsoo111 @ Jun 21 2012, 11:23 PM)
went to tesco today to see the motor oil... found out only produa mineral oil is 10w-30 actually... full syntetic oil is 5w-40... semi is 10-40... which one is better actually?
I try to get 0w-20 or 5w-20 and organize a bulk buy later this year after my car pass the 10k mark.
Here is the official response for UMW side:
We wish to informed that the Toyota Prius C can be used the following engine oil:
- 0W-20 - This oil mainly used by countries with 4 season that in cold weather and it is not supplier by Toyota currently.
- 10W-30 - This oil can be used and suitable for our Malaysian climate. The 10W represents the temperature difference and does not affect the viscosity of the oil as such it should not effect the performance of the vehicle.
The 0W portion of the oil viscosity rating indicates the characteristic of the oil which allows cold startability. Oils with lower value before the W allow for easier starting of the engine in cold weather.
The 20 in 0W-20 indicates the oil viscosity when the oil is at its operating temperature. An oil with a higher viscosity may be better suited if the vehicle is operated at high speeds, or under extreme load conditions. For more information, kindly refer to the Toyota Owner's Manual - Engine Oil Selection.
In the meantime, please feel free to contact us if you require any further enquiry/assistance.
------------
We doesn't need 0W as our weather don't go down below 0'C so 10W should be working fine for us.
However, lower oil viscosity during operating time (20) is better for Prius type of hybrid (Honda insight using 0W-20, so does Lexus CT200h) as is thinner and protect the engine at cool start (which Hybrid car needed most)
Let see how the price different between TGMO oil (Mineral 10W-30 is Rm75) and outside vendor.