i have a 92 civic si with about 90k on it, just wondering what's the best fuild to put in the tranny, my diesel tech teacher tells me to go with mobil one sythetic ATF but others tell me straight 30 motor oil, some said redline...I plan on keeping the car for a long time and want to get the most out of it, i tend to jump on it once and a while so i want something that's good and can handle being abused sometimes...what kinda fluid should i use for my transmission??