Quote Originally Posted by meledson View Post
the first owner used full synthetic after the 10,000km pms. and from the record, nasusundan naman ang every 10K pms. got the ZZ Dec 2007. using RP during oil changes every 10,000Km
Hmmm... I heard that the recommended interval was 5,000km between oil changes for the ZZ equipped Corolla because of the sludging issue.

I've seen the same thing on a Corolla in SpeedLab and it had around half the mileage on the odometer you have on your car.