07-04-2018, 06:48 AM
We have an 8V92 2 stroke engine. I start to get nervous at 205 and will pull off road to cool down at 208 even if it's only a hundred yards to the summit. Have had to do that a couple of times going over Needles Pass in summer with ambient temp at +/- 120. Our fan is direct drive off engine. Yours is hydraulic driven and as Tom said should function a bit better on the grades. Also, the series 60 engines tolerate a bit more heat than the 8V92's. Trucks use these routes all the time so you should be ok in a coach. The key thing to remember is that you need to take your time and not get in a hurry. Use low enough gear going up to keep from lugging engine with to low rpms. Low enough gear going down so that jake brake provides sufficient hold back to keep from having to use your services brakes very much.