Clearing some space and found Lucas fuel additive and Red Line Water Wetter. The little bottles of Lucas look OK, the Red Line WW clear bottles are a little discolored(reddish brown). Found a lot of M1 15w50 and Kendall 10w40. The oil is easily at least 10 years old and I will donate to friends along with the Lucas and RL WW. Should I give my friends the Lucas FA and RL WW? The products will not be used in anything new or exotic but is there a possibility of problems with products this old. Don't want to screw my friends(they know how old). Thanks