There is a solution, use 6 months to hit 5K lor....by 6 months its time to change lube whether you use 10K or 3K mileage. Oxidisation that turn acidic risk if wait longer.

Now I already change my thinking on 5K max usage on FS. Lube tech has improved, engine tech has improved, so 7-10K service schedule should be ok. What I'm still in doubt is the oil filter. Can it filter efficiently up to 10K? Do note, our weather, heavy dust (look at your car after minor drizzle), humidity, etc do contribute to contaminate the lube greatly when compared to those living by countryside.

So FS can hold contaminant better but does is the filter up to par. More expensive car used good and expensive oil filter but our proton or even Honda ones, can tahan or not, I still greatly doubt so. It will still works up to 10K but efficiency down? clogging if happens means bypass mode might be activate that no filteration later.

Gua darn pessimistic......I think I'll keep to 5K schedule / 5-6 months service interval for my City.....maybe slightly since I want to maintain good performance and intend to keep my car (7 years liao, still optimum performance according the the mech)...haih, time to change the aging car but in reality, engine, chassis, transmission still performs almost as new, so a bit unwilling to let go.

Gua punya PE, 1.5 years, makes more noise than my City liao. Havoline Semi helps but build quality issue still a bit lacking tho have to admit much improved that before PE era.

Also do proton really cares abt long term durability of our engine. They can promote 10K mileage on FS with oil filter not up to par also never mind, coz these problems will SLOWLY accumulate....won't see immediate degraded performance or damage. Warranty only 2 years, engine problems comes after 3-5 years.....