hi all sifu.. need help... my seg 4afe engine since i change the engine oil, after around 4000km running, i check my engine oil level only i realize the oil level dropped to the lowest..

so i buy 1L engine oil at shell and refill to the correct level. until now my mileage already reach 7000km and i already fill up for 3L engine oil. i am wondering where is my engine oil going.. no white smoke from exhaust pipe output.. engine running smooth..

currently 260,000 km mileage.
already find out the engine oil leaking from bottom part. full of oil over there.
might need to go for a overhaul   

Ok guys , i owned 2003 toyota camry 2.0e ... i need to change front and back spring plus absorbers due to my current absorbers already leaked , got some oil came out from it ... what else should i change ? cause i want to feel like completely brand new car handling .. other then toyota spring and absorbers , can you guys recommend me some good brand ... plus the best place to buy it which is very reasonable ... owh and also reliable workshop around klang valley ... thanks