Quote Originally Posted by oj88 View Post
If you drive around in traffic a lot like we do here in Metro Manila, the time the engine is running at idle RPM becomes a factor. Leaving the engine at idle RPM for a significant amount of time has detrimental effects on oil life and by extension, added engine wear.

That's why it is not the best practice to just rely on traveled distance to decide on when to change the oil. The actual engine run-time is actually the reason why car manufacturers specify a "whichever comes first" clause.
good explanation sir..

buti na lang ako sakto within 3 to 5 months ang 10k travelled distance.. so palaging every 10k ang change oil ko which is still within 6 months time frame.