Forum Discussion
the_bear_II
Jul 21, 2015Explorer
210 is as high as I would want to get on the climb you described.
I'm guessing...on your gauge (if it's accurate) that would be just under 3/4...220 would be 3/4.
Stock gauges aren't always accurate. In my old truck the gauge was 20 degrees low. I put in an aftermarket gauge to get an accurate reading.
There is a Royal Purple product called "Wetter Water" that works well. It helps to keep coolant temp at lower levels during climbs.
In my 2007 C4500 Chevy (Duramax & Allison) the normal temp is 180 and I've seen it hit 195 on a 6% grade towing my 15000lb 5th wheel in near 100 degree outside temp. That was in second gear at 40 to 45MPH.
I'm guessing...on your gauge (if it's accurate) that would be just under 3/4...220 would be 3/4.
Stock gauges aren't always accurate. In my old truck the gauge was 20 degrees low. I put in an aftermarket gauge to get an accurate reading.
There is a Royal Purple product called "Wetter Water" that works well. It helps to keep coolant temp at lower levels during climbs.
In my 2007 C4500 Chevy (Duramax & Allison) the normal temp is 180 and I've seen it hit 195 on a 6% grade towing my 15000lb 5th wheel in near 100 degree outside temp. That was in second gear at 40 to 45MPH.
About RV Tips & Tricks
Looking for advice before your next adventure? Look no further.25,175 PostsLatest Activity: Nov 09, 2025