which kind of oil to be used in an overhauled engine, like Mineral, Semi synthetic or Synthetic? and what API rating should it have. and how much viscosity like 5w-30, 10w-40 or 20w-50?
the engine fully overhauled, with new oversized piston and rings, bore and honing done. the engine total driven Kms 232,000. while after overhaul just 1000 KMs. running (brake in) Done with caltex Havoline 10w-30
Car is santro club 2003