Petrol and oil? Or water and oil? I doubt that's petrol. If it is just petrol just dismantle everything, drain the engine oil, drain the gearbox oil and just pour in new one and replace the air filter. Petrol will dry up very very quickly. If it's water that's a bit harder to dry. Just make sure after you close everything up, you give your engine a quick rinse of water to wash off any petrol outside on the engine itself, you don't want a fire to start when starting up the engine.I towed the car to the outside workshop. The mechanic told me that the ECU kaput already. Anyone knows the price of new/2nd hand ECU for MyVi? The mechanic also told me that the engine oil already mixed with petrol(the Perodua people also told me the same thing,how could this happen?). I checked the engine and and its true the engine oil already mixed with petrol, even the air filter box also full will petrol. I don't understand how the petrol can mixed with the engine oil and how can the petrol can get into the air filter box. My theory is as I tried to start the engine last time, the fuel pump pumped in the fuel into the intake manifold but since there is no spark from the spark plugs so the fuel didn't burned and flowed into the cylinder room. But still how can the fuel get into the engine oil and the air box? Will the engine need to be overhauled?
As for the ECU, probably worthwhile going to a chop shop to find one. Or consider investing in a Motec or Haltech or any standalone ECU for your future modding purposes.