http://binged.it/1giqIeM I made it with 1 rated mile remaining but started with 170 miles of rated range, drove at 70+ and in freezing temps. I managed the loss to the destination, but it still freaked my wife out when she noticed we rolled in with 1 remaining. The rest of the trip the lowest I was allowed was 10 remaining Get at least 40 miles of rated range buffer as the Mt. Shasta supercharger is literally the highest supercharger in elevation. Coming from Corning the elevation delta is nearly 4000 feet. Figure 7 miles of rated range lost per 1000 foot elevation gain and you'll lose about 35 in elevation gain alone. Factor in more if temps are below 50 degrees and/or wet roads and more if you want to keep up with car traffic and not the slow trucks. Also, the stretch to Grants Pass crosses a few very high passes (with the highest point on I-5 being the Sisiykou Pass), but the Grants Pass supercharger is at a lower elevation so you end up getting range back.