im changing the engine oil tomorrow. Any idea's what grade oil should i go for. I read that going for the thinner oil grade will cause leaks and the last oil we put in was Mobil1 15W40. Iv seen the same grade oil being sold by PSO, not by shell and haven't checked with castrol or Total.
There are brands like havoline and mobil1 here in peshawar but not sure about there authenticity.
So what should i go for? Car has clocked 130k km's.