QUOTE(DBKL @ May 10 2016, 10:38 AM)
thx again, will try later on, btw, my FC is getting a lot better compare to "below 10k mileage", sometimes it hits up to 6L/100km for 100% highway drive la of course
QUOTE(TDUEnthusiast @ May 10 2016, 10:40 AM)
If you are willing to DIY, you can try opening up your door panel and putting a bit of windscreen sealant around the place where the door clips sit on. It may help because the door clips don't snap onto the panel. Rather they just slot into there and can actually move quite easily. You just need to remove 2 screws behind the door handle, two beside, and one that secures the driver's console, then pry the door panel off starting from the door handle part.
Air-cond vent problem unfortunately cannot be solved I think.. The only thing you can do is to minimise or eliminate it by adjusting any of the air-cond vents when the sound appears. Normally it makes it go away. This problem seems to have been around for a long time. I guess it's hard to get rid of low quality vendors.

Finally, did you see where exactly the oil is leaking from? For the Campro engine, this problem normally happens at the oil dipstick and the rocker cover. The rocker cover leak is because Plotong uses a bit of sealant only. I'm not sure what causes the oil dipstick leak, but I heard that it's related to not removing the dipstick during oil change.
I had this problem long time ago. Now already solved after numerous attempts with different methods. It's related to the door design, which is rather shit. It's either caused by the weather sheet that is no longer stuck onto the door properly, or water coming through the holes where the door clips go through. If you want to go with the easy way, you can just cut small holes on the bottom of the door seals to let water flow through, but that might affect the sound sealing ability of the door seals. The other thing you can do is buy windscreen sealant, and put a thick upside down U layer around the inner side of the door clip holes and paste a plastic layer such as a book wrapper over each hole. This covers the door clips and stops water from going through.
for both engine and petrol leaking problems already solved, for engine oil leaking, due to the oil sump loosen, so they ended up just gum back, for petrol, SC claimed that there is no leaking, but underneath, what other foreman told is that our lower parts comes with anti-rust coating which it is very obvious if kena petrol, and the caused of leaking petrol is one of the longest petrol hose that goes all the way to the back petrol filter had bengkok, it is not very obvious if we observe it from the upper part, i can't even smell any petrol leaking, I guess that's why Persona is easier terbakar when accident, do note folks, later then if got chance, I'll try to locate which petrol hose that usually bengkok and caused small amount of petrol leaking