My local AAP had a jug of old stock CJ-4 RTS next to the T6 on the shelf today when I went in to pick up supplies for my oil change this week. I bought the T6 rather than the older stuff, but am now considering going back for the other to add to my (very small) stash, and want your opinion. I noticed when I picked the two up, the oil in the T6 jug felt a little thicker than the oil in the older jug when sloshed. Maybe a reduced viscosity spread (T6 is thinner when hot) is part of how they made it more shear stable?
Would it be worth going back to pick up the older stuff at $25/gal, or no?
Would it be worth going back to pick up the older stuff at $25/gal, or no?