I want to say hi and share my joy at my new toy. A 2003 RC51 with 20K miles on it. I paid $4700, stock exhaust. It came with some nasty flush mount turn signals and a mess of a Dussault undertail. The wiring was a jumbled mess. Tail lights didn't work. I finally had time today to clean up the wiring, got the tail light to work (just needed some 1157 LED bulbs), and threw a pair of Protons in front. Changed the oil to Mobil 1 4T synthetic, K & N filter. My god, that oil filter was hard to get to... After that took her for a shake down ride and the smiles were big on me. I owned a 2003 CBR600RR until a month ago and I loved that bike. However, my 100 mile ride impression with the RC is nothing but amazement. I feel like I can go faster with less effort in the twisties which surprises me.
Anyway, next mods will be a set of CF Sato slipon, PC III, some Pilot Power 2CT, steel braided brake lines, Marchesini wheels...and on and on. Thanks to all the posters whose threads I read to get my new toy up and running.
Welcome. I just changed my oil too and used Mobil 1. You try autozone? They have both, that's why I tried it there this time. $13 for the filter.
If you're in the bay area, you def want to check into your gearing. Going lower than stock will really help you out there. 15/42 would probably work nice.
Good luck, enjoy.