Hi.

My mechanic told me that everytime we change the oil sa mga taxi namin (we're new in the taxi business), he adds STP (oil additive). Is this really necessary?

And also as mentioned in another thread of mine na hindi na rin daw kailangan mag oil flushing? And in fact, nakakasama pa?

One more thing, our local Toyota casas advice na every 5T kms. mag-change ng oil/tune-up. But I read somewhere na every 10T kms. daw ang recommended ng Toyota in Japan. Which is true? Btw, my mechanic advices na around 6-7T kms daw.


TIA.