I settled with 5k/10k/3k in my Inferno. Made a huge difference than with the grease it came with. Whatever works for you, only you will know? But rule of thumb as the rest of the guys posted, thickest in the center, then thinner in the front, and thinnest in the rear. You want your rear wheels to unload before your front wheels. You wont push through the turns if you follow this diff lube order. Nice tight turning capabilities this way. Good luck.