I use the green stuff given to me by another cyclist. Just bought a 1lb tub of Valvoline Dura Blend moly-fortified synthetic blend NGLI #2 lithium EP grease (PN VV278) at Autozone. It's $5, minus instant $5 off $5 coupon. The Valvoline has a lower coefficient of friction. There's no need to spend more $ on green grease.