Hissin, at the dealership, old for us is 97 / 98 model years. Any older than that and they generally dont get brought to us at that point. Thats how it is in my area anyway. We do have the older spec fluids but theyre sitting in the parts room collecting dust. 99% of what comes in can take the merc v as its formulated to perform better than the previous formulations of mercon anyway.