i need your advice for my Honda Civic FD2 5 years old at 150K KM, previously i'm using Liqui Moly Hi-Tech 5W-40 Fully Sync, but due to heavy travel, will clock 10K KM in 2 months, is kinda costly for me to continue use it, so i jump ship back to Honda Original Fully Sync Engine Oil, but i feel the performance and protection is not that good, therefore i jump ship again to Castrol Edge which i brought before GST at 128 for 4L, i assume is kinda good price, after being using for 3k KM, i feel the engine sound is rough and i'm experiencing bad Fuel Consumption, i been recommend by another workshop that maybe i should try using back the Liqui Moly whether it solved my High Fuel Consumption problem or not. Is the Engine Oil really will cost High Fuel Consumption?

so far this is what i have done to try to fix my high Fuel Consumption problem.
1. Clean Throttle Body,
2. Back to Honda Service to do a Hi-Scan(no issue found, and even pay for doing ECU relearn)
3. replaced 02 sensor
4. replaced fuel filter
5. replaced air filter
6. clean fuel injector.
7. replaced spark plug.

but the problem still occur.. i'm having 19-20L / 100KM.. T_T

This post has been edited by invisiblelim: Jun 1 2015, 01:09 PM

sorry for the typo error on the Fully Syn..

based on your advice, i should do it now or wait until my next service?as i still have 7k due for next service?