Are you talking about FS 359/Winiger Ridge?
I was up there last fall a few times on the bike, and they've updated both the entrance and the parking area above the reservoir. The road itself was not a mag chloride road, but would be easily driveable in a Subaru or truck. Most of the spurs are closed.
1976 FJ40 - green and mostly stock
1996 FZJ80 - not so stock