Tell us the number of teeth in each chainring and each rear cog. What gears work for you is very individual. Some people ride a high cadence and need smaller gears, some work more efficiently at a slower cadence. Of course, the ones who go really fast ride a high cadence in big gears, but that's not most of us.
Oil is good, grease is better.
2007 Peter Mooney w/S&S couplers/Terry Butterfly
1993 Bridgestone MB-3/Avocet O2 Air 40W
1980 Columbus Frame with 1970 Campy parts
1954 Raleigh 3-speed/Brooks B72