I am in karachi. Asal me jab me race deta hu car ko to car thora sa jhatka leti hai r engine noise barhti r phir speed barhna start ho jati hai r engin noise normal hojati hai to kisi ne kaha k gear oil change karwa len hala k gear oil stik to oil pora hi bata ri hai r oil color bhi saf hai but us me chiknahat nahi hai bilkul any solution for this k gear oil change karne say yeh chez theak hojai gi?