2024 Tranmission Temps

Bstevens1084 · July 16, 2024

I towed my 5th wheel camper for first long trip from NY to Myrtle Beach SC. I bypassed the Washington DC area so went through Virigina on I-64 on the way home. Of course the east coast is dealing with highs in the 90s lately so it was hot with temps in the upper 90s on Saturday but going up the mountain the trans regularly stayed around 200-205° reaching max of 215° before I made the down hill before I-81. It didnt matter how I drove, temps stayed in the 200 range until the sun and air temp went down. Should I be concerned? I dont tow regularly as I normally keep the camper at a seasonal site.

Capt Bob · July 16, 2024

I'm towing 7000lbs so not an apples to apples comparison. We just got back from a 5K run that saw temps approaching 100 F but the trans temp never got above 180 +/-.

newdude · July 16, 2024

14 hours ago, Bstevens1084 said:

I towed my 5th wheel camper for first long trip from NY to Myrtle Beach SC. I bypassed the Washington DC area so went through Virigina on I-64 on the way home. Of course the east coast is dealing with highs in the 90s lately so it was hot with temps in the upper 90s on Saturday but going up the mountain the trans regularly stayed around 200-205° reaching max of 215° before I made the down hill before I-81. It didnt matter how I drove, temps stayed in the 200 range until the sun and air temp went down. Should I be concerned? I dont tow regularly as I normally keep the camper at a seasonal site.

Sounds about right especially if you've got a heavy camper. These also have a transmission thermostat that opens at 143F.

Approx. weight of your camper?

BuckWallace · July 16, 2024

I tow a relatively light camper, and our big trip last year pulling up a consistent grade over the mountain with outside temps at 100 I saw transmission temps top out at 203. I don't think 215 with a 5th wheel sounds too unreasonable. Mine is a gasser with the 10 speed.

Bstevens1084 · July 17, 2024

6 hours ago, newdude said:

Sounds about right especially if you've got a heavy camper. These also have a transmission thermostat that opens at 143F.

Approx. weight of your camper?

Max is 12400, just under 37' Jayco Eagle. I had about 1/2 tank of fresh water so I would say between 11500 and 12k.

newdude · July 17, 2024

10 hours ago, Bstevens1084 said:

Max is 12400, just under 37' Jayco Eagle. I had about 1/2 tank of fresh water so I would say between 11500 and 12k.

I'd say your temps are right in line then. Heavy trailer, hot day.

UWSkier · July 17, 2024

I saw 212F in the climbs towing my 8000ish lb travel trailer through Arizona last week. Gasser so it was turning a few revs, between 3200 and 4000 RPM pulls.

Another JR · July 18, 2024

13 hours ago, newdude said:

I'd say your temps are right in line then. Heavy trailer, hot day.

Plus a massive frontal area to push through the air compared to a travel trailer.

20L8TSierra24 · July 24, 2024

My Travel Trailer weighs about 9500 lbs loaded and my trans temp from SW Fla to Savannah never got over 175. I'm sure it would be higher if I had any kinds of hills.

lsttype · August 2, 2024

Just took my 24 GMC on its 1st tow trip. Camper fully loaded weighs over 9k. It was maybe 85 outside so not super hot. I saw a maximum of 178 trans temp. This was in the Ozarks. I was very happy with the 10 speed. I was able to pull the steepest grade around 3k or less.