Winterize Your Truck Before the First Hard Freeze

Hey there, and welcome back to The Mobile Insider. Last week was about keeping the crew warm. This week it's the truck itself. Up north, the first hard freeze is either here or a week away, and the night it hits is the night a water line splits. So Field Notes covers winterizing: water, propane, the generator, and carbon monoxide. You'll also get batch-brew holding times for holiday events and a 10-minute weekly cash habit for the slow months. Southern crews: two Florida spots are taking trucks through December, so check Quick Hits.

This Week's Field Notes: Winterize the Truck Before the First Hard Freeze

Cold doesn't just slow sales. It breaks things. A frozen line on a Tuesday night turns into a cracked pump, a wet floor, and no handwashing water on Wednesday, and no handwashing water can mean no service. Four areas to check before the overnight lows drop below freezing:

Water lines and tanks. Ice takes up about 9% more room than water (its density drops about 9 percent on freezing, per the USGS), and that's what splits fittings, pumps, and water heaters. If the truck sleeps outside, either keep it heated overnight or drain the fresh tank, open the low-point drains, and run the pump dry for a few seconds. Empty the water heater, too. Follow your truck builder's or manufacturer's winterizing steps, and sanitize the system before you refill it for service.
Propane in the cold. A lower temperature means lower vapor pressure in the tank, and if the pressure gets too low, not enough gas reaches your burners. A tank that frosts over makes it worse, because the frost insulates the tank and slows vaporization (Propane Education & Research Council). On cold days, keep cylinders fuller, swap before they run low, and if your fryer and griddle sputter at the same time, it may be the tank, not the regulator. Never heat a cylinder with a flame or torch.
Generator cold starts. Check your owner's manual's oil chart for your lowest expected temperature. Honda's EG5000X manual, for example, recommends SAE 10W-30 for general, all-temperature use and allows other viscosities only when your average temperature falls in the chart's range (Honda owner's manual). Do a test start at home on the coldest morning of the week, not at the gig.
Carbon monoxide. Closing up the windows and doors to stay warm is exactly when CO builds up. The CDC says to run generators outside, more than 20 feet from windows, doors, and vents, and to use a battery-powered or battery-backup CO detector. It also counts more than 400 Americans who die each year from unintentional CO poisoning not linked to fires (CDC). Point the exhaust away from your service window and never run the generator inside a garage or enclosed commissary bay. Headache, dizziness, and nausea on a cold shift are a reason to get everyone outside.

Southern and milder-climate crews: you're probably not draining lines this week, but a single cold snap can still freeze an exposed hose overnight. Keep a short "freeze night" list (bring the hose in, drain the tank, top off propane) so you can run it in ten minutes when the forecast surprises you.

This week's takeaway: Tonight, write a one-page freeze-night checklist for your truck (drain points, water heater, propane swap, generator oil, CO detector battery) and tape it inside a cabinet door. That's a 20-minute job that can save you a cracked pump and a lost service day.

Coffee / Beverage Spotlight: Batch Brew That Still Tastes Good at Hour Two

Cold mornings and holiday events mean one thing for coffee crews: big batches. The catch is that brewed coffee doesn't hold forever. BUNN's own guidance puts the ideal holding time at 20 minutes in an open-top decanter and 60 minutes in a closed container, with an ideal holding temperature of 175–185°F; hold it longer and you get a scorched or bitter taste (BUNN Serving & Holding catalog).

Brew into closed, insulated servers instead of onto a hot plate. Insulated pump airpots (Affiliate link) don't need power, which helps when your generator is already working hard.
Label every server with the brew time. A strip of tape and a marker works. Dump and rebrew on schedule.
Brew smaller batches more often during slow stretches, and save the big batch for the rush.

Food truck adding hot cocoa or cider for a winter event? Anything with milk needs to stay hot. The FDA Food Code calls for hot holding at 135°F or above (see Code corner in Quick Hits). Ask your health department whether new drinks need to be added to your menu or plan approval before the event.

Business Bit: The 10-Minute Monday Cash Check

Slow season doesn't sink trucks. Surprises do: a January insurance renewal, a generator repair, or a tax payment you forgot was coming. If you pay quarterly estimated taxes, the fourth 2026 payment is due January 15, 2027 (IRS Form 1040-ES). A weekly habit keeps you ahead of all of it.

Reclaim Your Time: set-and-forget savings

Open a separate savings account for "slow season + taxes," so the money isn't sitting next to your operating cash.
Pick a set-aside percentage of weekly sales. Your accountant can help you choose it.
Set up a recurring weekly transfer in your bank's app for that amount, every Monday morning.
Add a 10-minute Monday calendar reminder: check your balance, list the bills due in the next four weeks, and adjust the transfer if a big week or a slow one changes things.

Hypothetical: if you spend 30 minutes a week digging through receipts and bank tabs trying to figure out if you can cover a bill, a 10-minute check gives you back about 20 minutes a week, and the surprises stop being surprises.

Hit reply and tell me the task that eats the most of your time. It might become a future issue.

Quick Hits / Links

Free tool: Catering Quote Calculator. Price a holiday event in a couple of minutes, including headcount, minimum, travel, tax, and deposit.
LaBelle, FL: In a Food Truck Down by the River. A Sunday–Wednesday food truck program at Barron Park, 1559 De Soto Ave, 11 a.m.–8 p.m., with November and December dates open. Self-contained trucks only, max 2 trucks per day, $25 application fee plus $30 per day, and the application deadline is Dec. 19 (LaBelle Downtown Revitalization Corp. application). Weather note: rain or shine with no refunds for standard weather; if the organizer cancels for extreme weather (hurricane, tornado warning, or similar National Weather Service emergency), you get a free replacement date.
Madeira Beach, FL: Archibald Memorial Beach Park weekly slots. The City is booking food trucks one week at a time while the park's Snack Shack is closed, including Dec. 21–27 (apply by Dec. 16). Sunrise to sunset, $25 per day for up to two parking spaces, a $100 annual fire inspection, and you must be fully self-sufficient for power, water, and waste (City of Madeira Beach application). Weather note: the City may cancel or reschedule for weather, with refunds at its discretion, so confirm the details with the organizer before you commit.
Code corner: hot holding. The FDA's model Food Code sets 135°F and up for hot-held food (§3-501.16). States and counties adopt it with their own changes, so your jurisdiction may enforce a different edition (FDA).
Got an event in your area? Reply with the name, date, link, and weather policy, and I'll consider it for an upcoming issue. Southern, Southwest, and West Coast submissions are especially welcome.

Until Next Week

Here's my question for you: what's the one thing that has broken on your truck in the cold, and what did it cost you? Hit reply and tell me. I read every one, and I'll share the best lessons (no names) in a future issue.

If this issue helped, forward it to a fellow operator before their first freeze, and send them the free Catering Quote Calculator (it's linked in Quick Hits) while you're at it. If someone forwarded it to you, you can subscribe free here to get it every Thursday.

Stay mobile. Stay hungry. Stay in the know.

See you next week,

Troy

This newsletter is free and will stay free. Occasional affiliate links or sponsor mentions help cover research time and keep it going. I only recommend things I'd use myself. Amazon links use our Associates tag and may earn a commission at no extra cost to you.

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