Engine knock sound when revving during coldstart = avanza

[mda]

This is somewhat misleading if you ask me.

The Toyota engine that is prone to sludge is the 1.6L from the 2001 to 2007 Altis. I have a 2007 model (running on LPG at that) and to date at 115,000kms there's still no sludge and the last compression test at Speedyfix (at around 80,000kms) showed healthy cylinders across the board. I replace the oil every 5,000kms and i understand those who had sludge were the ones who used synthetic oil and extended the drain interval to 10,000kms.

Unless there have been minor modifications on that engine, I believe the 1.6L engine of the 10G Altis up to 2010 also use the 01-07 ZZ engine.

Yung facelifted Altis na iniba yung tail lights yung may different ZR engine na.