sir..please recommend..

i got stock mobil engine oil 10-40 and mobil oil filter...so which ur product u can suggest to me if i just use this to change my engine oil??


2nd plan i want buy ur product include oil filter coz i can sell mobil set to my friend...


not care about my engine..so now engine condition not best..really want clean inside my engine...engine is mitsubishi mivec 1.8...