Assalamualikum everyone,
I am driving a Toyota Vitz 2007 model with the 1.0 3 cylinder engine. Yesterday while inspecting my car, I noticed an oil leak coming from the valve cover gaskit. I took the car to the mechanic he told me "tappet cover jain ki leak hai". I want to ask weather the valve cover gaskit and "tappet cover jain" are the same thing?
My second question is regarding engine oil grade. I bought this car around 6 months back and changed the oil. I used ZIC 20w-50 fully synthetic oil. Do I need to change my oil grade or keep using the same grade?