One of the cycle mags had a testing Company do a friction test of Campy and auto parts store white lithium grease in the late 70's, there was no difference, however when my expensive Campy grease tub was empty I filled it with white grease, as it was way cool to have Campy grease tubs in the shop. Back in those days everyone dreamed about any Campy products. I've been wrenching since the early 70's and now believe Shimano grease is the current non plus ultra grease. Not sure it will hold up 30yrs. However!
Regards