Hi Guys..sure could use some education here. Just bought back an older bike I had..a 1972 CT 2 175 Enduro. The Owners Manual I haven't bought yet, but I am looking to change the Oil both in the motor and the gearbox. The Man i bought the bike from said he uses straight Yamalube 2s in the Gearbox filler under the seat ( there's a small reservoir) and a 10-30 in the engine itself. Any help would be REALLY APPRECIATED. Just getting back into riding after having a family. thanks..