Oil consumption

[rap2_tan]

Good day tsikot! Need your inputs...
Ive been experiencing oil consumption on my 06 vios
Its been 3 months time since my last change oil
My dipstick level was lessen by 1/4
I use toyota fully synthetic oil
I see no leaks
No white smoke
No oil traces on the muffler
Is this normal since is use fs oil in a 6 yr old engine?
Would you suggest switching to regular or semi syn oil?
Or there is something wrong to my engine?
Thanks!!

[dvldoc]

Did you check your oil in the same way, for example engine hot vs engine cold, same level surface vs parked on a incline or decline. It is not uncommon to loose small amount of oil through the cars PVC system. And if your using a 30 weight oil still you might want to switch to a 40 weight oil. Especially on a 6 year old vehicle. 40 weight oil is more appropriat for a tropical climate.

40 weight gives you more protection for longer there is really no reason to run 30 weight oil in the Philippines.

This is for a diesel but apples to gas as well. The only reason companies are pushing 30 weight oil is fuel economy and there really is not much difference between 30 and 40.

[rap2_tan]

Thank u sir for the input.
I use 5w 40
Do you mean its ok that i lose this amount oil in 3 months time?
Im planning just to switch to mineral oil do u think this will help?

[dvldoc]

Synthetics actually burn off off less, That is true synthetics. about 80% of synthetic oils are group III oils so not true synthetic like Mobil1 or Motul. If your not running your oil more than 10000kms then your wasting money on synthetic on a gas engine. Just be sure to use a oil with a good API rating.

I would inspect your PVC system on your vehicle if the valve is stuck or the internal spring is collapsed , the engine will burn oil. Also check for engine oil in the air cleaner housing or intake tube. I doubt you have worn rings on a Vios unless it's physically smoking when your driving.