I only remember the 106 grease and from what's left of the oil bottle label it was 108 now I see 107 for HO and larger and 108 for small HO what ever that means. They don't define them other than one being a lighter weight oil . Mine was so old from the mid 80's it looked like it changed with sort of a film at the top and I know oil degrades over time. I opened the old 106 grease about a year ago and it was still sealed yet it was not white more of a gold color and thick , can't say if it changed being sealed I never used it since Athearn always lubed the trucks so I never bothered I just lubed the motor bearings and worm bearings and sometimes the axle bearings and none of my diesel's have been run much some were never run on track. I emailed LaBelle for an answer, thought I'd ask here since there are some old guys well past 60 like me. I just bought the 108 and 106 because on Amazon the two are less money and they don't sell the 107 other than in the three pack For $30.