is any Super C really four season? planning to use ours in january around Missoula
Started by four_season_question on Nov 5, 2025 in Super C talk, 7 posts
four_season_questionOPDay tripperMissoula, MT
drivesa 2015 Winnebago View 24G, moving up to a Super C this winter
as promised. we have a 2015 View 24G now, the Sprinter one, and it has been a good little rig but the water lines run along an outside wall and we have frozen the kitchen line twice. my wife has said the words "never again" in a tone i recognize.
what we want to do: weekends in january and february at places like Seeley Lake and up the Blackfoot, nights from zero to maybe fifteen below, and one week at Big Sky with the grandkids where the coach is the lodging. we are looking at a Seneca or an Accolade, maybe a Dynamax if one shows up used.
so the actual questions. which of these has heated and enclosed tanks for real and not just a pad stuck on the bottom of one? is the fresh tank inside the heated envelope or out in the breeze? and how fast does the furnace drink propane when it is ten below, because i have no feel for that on a bigger coach.
I do not need it to be a cabin. i need the toilet to flush on sunday morning.
snowbird_since_2016Long haulerMesa, AZ
drives2016 Dynamax DX3 37BH on a Freightliner M2 106, towing a 2014 CR-V
i will be honest that my winter strategy is driving to Mesa, so weigh it accordingly. but i did own the DX3 for two Wyoming winters before we retired and I learned some things the hard way.
"four season" is a marketing phrase and every brand defines it to suit itself. the questions that matter are the ones you already asked: are the tanks inside an enclosed, heated underbelly, does furnace air get ducted down there, and where do the water lines run. ask for a photo of the underbelly with the coroplast panel off if you can. if all you see is a 12 volt pad on the black tank and open air everywhere else, it is a three season coach with a nice brochure.
propane: our Suburban furnace was a 35,000 BTU unit and on a calm night at zero it ran about half the time. call it a third of a gallon an hour while it runs. you will go through a 30 some gallon onboard tank faster than you think over a long weekend, so know where the nearest fill is before you go.
retired_lineman_rvWeekenderMedford, OR
drives2020 Nexus Ghost 36DS on a Freightliner M2 106, towing a 2010 Ranger 4x4
Medford here, and we camp up toward Diamond Lake and the Crater Lake rim road in winter, so cold but not Montana cold. most nights are teens.
on the Ghost the fresh tank is inside, under the dinette, and the dump valves sit in a heated bay. it has done fine down to about 8 above. the one thing that got us was the outside shower box. the little hoses behind the door froze solid and split one fitting. it was a $14 part from the RV store in White City and an hour of me lying on frozen gravel, which at my age is the expensive part.
two cheap things that help more than people think. foam board in the windshield and a quilted cab curtain, because that big windshield over the cab is where all your heat goes. and a little ceramic heater in the wet bay on shore power. i ran 30 years of power lines, so make sure your cord and your pedestal are rated for what you plug in. people cook pedestals every winter.
bunk_over_cab_kidsDay tripperGreen Bay, WI
drives2018 Jayco Seneca 37TS on a Freightliner M2 106, three kids in the cab bunk
Green Bay. we take our Seneca 37TS up to a couple of ice fishing weekends on the bay and one at a county park near Shawano, so we have done minus ten more than once.
what i would tell you: the Seneca has an enclosed underbelly and the tanks have heat pads, and it still froze our gray tank valve the first year because the valve handle sticks out past the heated part. we now dump gray in the afternoon when the sun is on that side, and we put a cup of RV antifreeze down every drain before bed so the p-traps do not freeze. stupid simple, and it works.
the cab over bunk is the coldest bed in the coach. the kids sleep up there in winter bags rated to zero and they still complain, which they do about everything, so i am not sure what that tells you.
mod_bev_tModeratorCoeur d'Alene, ID
drives2017 Dynamax Isata 5 35DBD on a Ford F-550, 6.7 Power Stroke
moving this along for the folks who search for it later. Jayco calls their cold weather setup Climate Shield and lists what is in it on the spec pages, and the Seneca and Entegra models share a lot of it. look the specific model year up at jayco.com instead of trusting the salesman, the package has changed over the years and what was standard on one year was not on another.
whatever brand you land on, pull up the spec sheet for that exact year and see whether it says heated and enclosed for the tanks, the dump valves and the fresh lines. if it only says heated tanks, the valves are probably where you freeze, like the Green Bay crew found out.
four_season_questionOPDay tripperMissoula, MT
drivesa 2015 Winnebago View 24G, moving up to a Super C this winter
update, and i owe this thread one. we did not buy yet, but a friend lent us his 2019 Accolade for a weekend at a buddy's place near Seeley Lake and it got down to minus six friday night.
what worked: the furnace kept it at 64 all night and the tanks never froze. what did not: the gray valve, exactly like the Green Bay post said. by saturday morning it would not pull. a hair dryer on a long cord for ten minutes and it let go.
propane went from about 80 percent to just under half over two nights, which matches the third of a gallon an hour guess pretty well. i did the windshield foam board idea and it made a difference you could feel with your hand.
so the answer to my own question is probably "yes, if you do a few things," which is not the answer i wanted but i believe it.
freightliner_m2_techFull timerGaffney, SC
drivesother people's M2 106s all week, a 2015 Dynamax DX3 37RB on weekends
one thing nobody has said, from the chassis side. if you are going to sit in the cold for days, the coach is only half the problem. on the M2 the fuel can gel if you filled up with straight #2 somewhere warm and drove north. fill up locally once it gets cold, the stations up there switch to a winter blend, and keep a bottle of anti gel in a side compartment for the times you could not.
plug the block heater in whenever you have power the night before you leave. the cold start thread over on the chassis board covers the rest of it.
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