Newbie question driving mountains on wet roads

[Crasher]

Our exhaust brake was hooked to the release of the throttle. I could prevent it from coming on by keeping a slight pressure on the accelerator, not enough to add fuel, but just off the EB switch. The EB would release as soon as I added power. Now, we have a much heavier rig and with the loaded trailer, we are well over 50,000#. I do not like the idea of going down a long 6 or 7% grade on wet roads with just the drive wheels slowing me with the engine brake on. Sometimes on dry roads, I need the Jake brake on high just to hold the speed in check. I wouldn't want to try it on a rain slick road.

[C310P]

All good advice ... but always keep in mind to never allow your coach to get ahead of you on a hill! "Force" is "mass" x "velocity squared"; that means that if you are adding 10 mph to your speed, the equation is multiplied by 100! That's a lot of energy for your brakes to handle. So, my advice is to set a speed you are very comfortable with, using a lower gear and with your aux brake system activated ... and if that speed is below the flow of traffic, stay to your right and activate your 4-ways.
As your experience builds, so too will confidence, and you will soon discover what the best safe speed is for you.