20 Proven RV Maintenance Questions Answered For 2026

Q: How often should I reseal my RV roof?

You should reseal the seams annually using a product like Dicor Self-Leveling Lap Sealant. It costs about $12 per tube, and you will usually need 4-6 tubes for a standard 30-foot trailer. Do not wait for a leak to show up inside your bedroom ceiling.

Q: Can I use residential toilet paper in my RV?

You can, but it is highly recommended to stick to RV-specific or septic-safe brands like Scott Rapid-Dissolving. Residential paper takes much longer to break down in the black tank. If you boondock frequently, thick paper will clog your tank sensors and cause massive headaches when dumping.

Q: Do I need to run my RV generator under load?

Yes, you absolutely do. Running it without a load causes carbon buildup and wet-stacking in the exhaust. Running the generator for two hours monthly with the AC on prevents costly carburetor rebuilds.

By Tom Bradley · March 8, 2026

15 Common RV Maintenance Questions Answered

How often should I reseal my RV roof?

I check my EPDM roof every six months. You should reseal the seams annually using Dicor Self-Leveling Lap Sealant. It costs about $12 per tube, and you'll usually need 4-6 tubes for a standard 30-foot trailer. Don't wait for a leak to show up inside your bedroom ceiling. Water damage ruins rigs faster than anything else.

What is the best way to sanitize the fresh water tank?

I use a quarter cup of regular household bleach for every 15 gallons of tank capacity. Fill the tank, run the pump until you smell bleach at every faucet, and let it sit for 12 hours. Flush it completely with fresh water afterward. If you hate the bleach smell, Camco TastePURE Spring Fresh sanitizer is a solid $15 alternative.

How do I keep my RV black tank from smelling?

The geo method works wonders. I drop two cups of water softener like Calgon and a cup of Dawn dish soap into the black tank after dumping. Always keep at least three gallons of water in the bowl while driving. This prevents the dreaded pyramid plug from forming at the bottom.

Should I leave my RV plugged in all the time?

I'll be honest, leaving it plugged in 24/7 fried my coach batteries in year two. Unless your converter has a smart multi-stage charging system like the Progressive Dynamics PD4655, unplug it. If you must leave it connected, install a Battery Minder trickle charger to keep them at a steady 13.2V without overcooking them.

How often do I need to repack my wheel bearings?

Every 12,000 miles or 12 months. Whichever hits first. I use Dexter E-Z Lube axles, but I still pull the hubs annually to inspect the grease. A bearing failure on the highway will destroy your axle and cost over $1,500 to fix.

What tire pressure should I run on my travel trailer?

Always run the max cold pressure printed on the tire sidewall. For my Goodyear Endurance ST225/75R15 tires, that's exactly 80 PSI. Check them when the tires are cold, meaning before you drive or when the ambient temp is below 70°F. Under-inflated RV tires blow out from sidewall heat buildup.

How do I winterize my RV plumbing system?

Bypass your water heater first. Then, use an air compressor set to exactly 30 PSI to blow out the lines. Finally, pump RV antifreeze through the water pump until it reaches every fixture. It takes me about 45 minutes, and it prevents $2,000 in burst pipe damage.

Why is my RV slide-out sticking or jerking?

Dirt buildup on the tracks is usually the culprit. I wipe the rails with a damp microfiber cloth, then apply 3-IN-ONE RVcare Slide Out Silicone Lube. Never use WD-40. It attracts dust and turns into a gritty paste that will burn out your slide motor.

How do I stop my RV awning from flapping in the wind?

I use an awning de-flapper kit, specifically the Camco 42593 model. It clamps right onto the vinyl and costs around $25. Also, always roll the awning up if wind gusts exceed 20 mph. I've seen three awnings rip completely off the side of trailers at state parks because owners ignored the weather.

What’s the best battery upgrade for boondocking?

Swap those heavy lead-acid batteries for lithium. I installed two 100Ah Renogy LiFePO4 batteries. They weigh 26 pounds each, compared to 60 pounds for standard golf cart batteries. You get 100% usable capacity, and they last over 4,000 cycles. This isn't the cheapest option, but it completely changes how you camp off-grid.

How do I clean oxidation off my RV's fiberglass exterior?

Meguiar's Marine/RV One Step Compound works great for light oxidation. For heavy chalkiness, I use a dual-action polisher with a wool cutting pad. I'll be honest, this takes serious elbow grease. Plan to spend a full weekend on a 30-foot rig, but the glossy finish is absolutely worth it.

Why does my RV water pump cycle on and off constantly?

You have a micro-leak or a failing check valve. Check under the sinks and around the toilet base for drips. If everything is dry, the check valve inside the pump is likely stuck. Replacing the whole Shurflo 4008 pump takes 20 minutes and costs about $75.

How do I maintain my RV propane system?

I spray soapy water on every connection and valve twice a year. If you see bubbles, you have a leak. Also, replace the rubber pigtails connecting the tanks to the regulator every five years. Sun exposure degrades the rubber, and a cracked pigtail is a massive fire hazard.

Should I use a cover when storing my RV outside?

Only if it's breathable. I use the ADCO SFS AquaShed cover. Cheap plastic tarps trap moisture and cause severe mold growth inside your rig. Make sure the cover has padded corners so it doesn't tear on your gutter spouts during winter windstorms.

How do I level my travel trailer correctly?

Side-to-side leveling comes first. I use Andersen Levelers because they're faster than stacking plastic blocks. Once side-to-side is bubble-level, chock the wheels. Then use your tongue jack to level front-to-back. Doing it in the wrong order binds the chassis and makes your fridge run inefficiently.

RV Maintenance Schedule and Costs

Keeping track of service intervals saves you money. Here is a breakdown of what I spend annually to keep my rig in top shape.

Maintenance Task	Frequency	Estimated Cost
Roof Seam Resealing	Annually	$50 - $80
Wheel Bearing Repack	12 Months / 12k Miles	$30 - $50
Water System Sanitizing	Bi-Annually	$10 - $20
Propane Pigtail Replacement	Every 5 Years	$40 - $60

Expert Tips for Long-Lasting RV Components

1. Document Everything in a Spreadsheet

I track every single repair, oil change, and sealant application in a Google Sheet. Include the date, mileage, product used, and cost. When you eventually sell your rig, handing the buyer a printed maintenance log instantly justifies a higher asking price. It proves you actually cared for the asset.

2. Carry a Dedicated RV Tool Kit

Don't rely on a flimsy household toolbox. I keep a dedicated bag with a digital multimeter, a 12V test light, and specific socket sizes for my water heater anode rod (usually 1-1/16 inch). When your water pump dies at 10 PM in a remote national forest, you'll be glad you have the exact tools needed to swap it out.

3. Weigh Your Rig Annually

Tires and axles fail because owners overload their trailers. I take my rig to a CAT Scale at a local truck stop once a year. It costs about $12 to get individual axle weights. If your axle is rated for 3,500 pounds and you're pushing 3,650 pounds, you are begging for a mechanical failure on the highway.

4. Inspect the Roof After Every Trip

Tree branches and highway debris cause micro-tears in EPDM and TPO roofs. I take three minutes to walk a ladder up and scan the roof after every single trip. Catching a small puncture early means a $10 tube of sealant fixes it. Ignoring it means a $5,000 floor rot repair down the line.

Frequently Asked Questions

Can I use residential toilet paper in my RV?

You can, but I highly recommend sticking to RV-specific or septic-safe brands like Scott Rapid-Dissolving. Residential paper takes much longer to break down in the black tank. If you boondock frequently, thick paper will clog your tank sensors and cause massive headaches when dumping.

How long do RV roofs typically last?

A well-maintained EPDM rubber roof will easily last 15 to 20 years. Fiberglass and TPO roofs can push past 20 years with proper care. The key is keeping them clean and resealed. UV rays and standing water are the two biggest enemies of any RV roof membrane.

Do I need to run my RV generator under load?

Yes, you absolutely do. I run my Onan generator for at least two hours every month with the air conditioner or microwave turned on. Running it without a load causes carbon buildup and wet-stacking in the exhaust. This simple habit prevents costly carburetor rebuilds and keeps it starting on the first pull.