Aoa. I know this is an old thread. But I'm may be facing this same issue with the oil pump. Many mechanics said ke iski main seal aur gear ki seal leak hai. But it may be the oil pump thats leaking. Because when i start the car, the oil light goes off, comes back on and goes away again. I'm starting to think ke maybe i should have the pressure tested first. After that, im soooooo done with this car for good. The fuel average is horrible. I filled up 15lts in the past week, drove around 70kms or so. The fuel light hasn't come on yet, but the best fuel average I've ever got is 7km/ltr