Pang mitsu lang ata yung oil bay (rest Assure di Minola yung nilalagay nila )...regarding sa prefered oil, as far as I remembered sabi ni sir Ian wag lagi papalit-palit ng oil basta stick to one na lang as much as possible yung readily available sa atin kasi baka pag yung mahirap mahanap, pag nagpa change oil ka baka walang stock e di palit ka na namna ng langis..