This if prob a stupid question but none the less i need an answer. For my R32 GTS-T, what octane gas should i be using? What octane does most GTS-T drivers use? Also what oil viscosity is most recommended? I think I saw alot of people using 10W60, or 10W50, or 15W60 or 15W50. What's recommended? I wish I had a skyline manual.