mineral or synthetic oil???

As i was driving through the streets of Jelapang, i met a friend of mine. his ride is also a wira 1.8 mivec with stock flat 81 mm pistons powered by a unit of VAFC. we met and have a chat about handphones and stuffs but mostly it's about cars and cheap performance parts that we could get here in Ipoh. About 15 minutes later, i found out that i have a leakage somewhere between the oil filter and the oil sump." Money again"..i mumbled out those words as i checked thoroughly the leakage. i think it's because of my car's height. With a lowered spring and standard pressed shock absorber, my chances of my bottom body kissing the tyres are high.. As i checked i noticed that there's a scratch on the surface of the oil sump cover. so, i have another chat with my friend and he asked me what type of engine oil that i used...so i said to him that i dont really care as long as it's cheap but good response...i have tried those Caviaga's, Idemitsu, Penzoil's 15- 50 w and also castrol VMX that stock mivec uses. So my friend ask me about the response of all those oils...and i said.. "ada bezakah?" (are there any differences?) And he said that he had been using a lot of Engine oils too. Torco, Wurth and all those oils that he could get out of the performance shop...and he believes that those racing oils really have an impact on the performance of the cars.. Those Q8 and torco oils are good, but not suitable on the road for multivalves, he said because it evaporates quickly..suitable for track use...Motul..as he stated, are the best, but due to cynical price, it's not worth it buying that kind of oil..so, forget it. Other brands especially the 20- 50 W's are totally a thumbs down.
       So i wondered if he's telling the truth about all the spec that's he's given me.. all these while, i just stick to 20- 50W and 15-4ow's. But it feels alright.. i think that the response are ok... so why should i change to those expensive oils? But as i was driving to my friends Workshop in Tesco Seksyen 18, i though about asking him that question. He gave me a thumbs up and said, "Good food for healthy mind." What the fxxk is he talking about? But he gave me SUMO M2 mineral oil. He said my old engine fits best with mineral oil.But he gave me a 10 -40 W and said "this is original Japan maa..."..hehe.so i tested it and to my suprise it really does give more response than those i have used earlier..feels like i'll be using this oil for a long time..hehe..the price is acceptable and the response is good, the packaging is neat but the most fun is that it's more fun driving on the road... cool...