7 Pieces of RV Advice You Should Completely Ignore (And What To Do Instead)

You’ve heard it all before—the same tired RV advice passed down from YouTube videos, online forums, and well-meaning friends. But what if some of that advice is actually setting you up for failure? In the RV world, not all wisdom is created equal, and following the wrong tips could cost you thousands in repairs or leave you stranded on the side of the road.

From questionable plumbing fixes to controversial wheel bearing maintenance, there’s a lot of bad information floating around the RV community. The good news? You’re about to discover what really works. Whether you’re dealing with flexible tubing nightmares, awning dilemmas, or sealant confusion, it’s time to challenge the status quo and learn the smarter way to maintain your home on wheels. Ready to push back against conventional wisdom? Let’s dive into the RV advice you should ignore and what successful RVers actually do instead.

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1. Don’t Bother With Special Fittings For Flexible Tubing—Just Use Standard PEX

Here’s a secret the RV industry apparently didn’t want you to know: there’s actually a specialized fitting designed specifically for connecting flexible tubing to PEX. For years, RVers have been told to just use standard PEX-to-PEX fittings with a hose clamp and call it a day. But this shortcut is exactly why flexible tubing is the source of so many water leaks in RVs.

The proper solution involves a flex-to-PEX adapter fitting that has an extra-long barbed end specifically designed for flexible tubing. You can get two clamps on that flex side (and yes, the clamps are actually a different size than standard ones). The other end connects seamlessly to your PEX line.

According to Tool Troopers, RV water damage repair costs often range from $5,000 to $15,000+, with severe structural damage exceeding $20,000. That’s a hefty price to pay for skipping a $5 fitting.

Traditional Method	Better Method
Standard PEX fitting + hose clamp	Specialized flex-to-PEX adapter
Single clamp (often wrong size)	Two properly-sized clamps
High leak probability	Secure, leak-resistant connection
Replace with all PEX (not always possible)	Works when PEX replacement isn’t feasible

You might think you’re being clever by tightening down that hose clamp extra tight, but you’re really just crossing your fingers and hoping for the best. The best approach? Replace flexible tubing with PEX whenever possible. When that’s not an option, use the right fitting designed for the job. Your future self (and your wallet) will thank you.

2. Skip Bug Screens On Your RV Appliances—They Restrict Airflow

Some RV manufacturers warn against installing bug screens on appliance vents, claiming they restrict airflow and could damage your equipment. But here’s what they’re not telling you: the bugs that get inside cause way more damage than any screen ever could.

Mud daubers are notorious for building nests inside RV water heaters, furnaces, and refrigerator vents. These little architects can completely block your burn chamber or jam up internal components, causing your appliances to fail. Many RVers have had to repeatedly dismantle their units to dig out wasp nests and mud clumps.

The reality check? You’re better off doing a quick visual screen inspection twice a year than dismantling your water heater to excavate an insect condo. Yes, leaves or debris could theoretically get stuck on a screen. But that’s an easy 30-second fix compared to a complete appliance teardown.

Think of it this way: your manufacturer is worried about liability if someone installs a screen and never cleans it. But if you’re the type of person who checks your tire pressure and inspects your roof seals, you can handle a quick glance at your vent screens. It’s one less thing to worry about when you’re trying to enjoy your camping trip.

3. Write Down Every Single Model Number In Your RV For Exact Replacements

Years ago, new RVers were told to create a detailed inventory: the make, model, and serial number of every single component in their rig. The toilet, air conditioner, water pump, converter, refrigerator—everything. The theory was that if something broke, you’d need exact replacement information to get the right part.

But here’s the truth: you’re not locked into what came with your RV. In fact, you shouldn’t be. Most RV components are highly interchangeable, and the original equipment was probably the cheapest option the manufacturer could install. Your RV is upgradeable, modifiable, and customizable.

According to industry standards, RVers regularly swap out:

Air conditioning units for more efficient models
Standard converters for lithium-compatible systems
Basic water pumps for quieter, higher-pressure options
Original mattresses for comfort-focused replacements
Factory bathroom fixtures for residential-grade alternatives

When Model Numbers Matter	When They Don’t
TV mounting brackets	Air conditioners
Specific dryer vent locations	Water pumps
Custom cabinet hardware	Converters/inverters
Unique window sizes	Bathroom fixtures

You don’t need to be a slave to your RV’s original specifications. Sure, knowing your make and model can help with specific questions about structure or layout. But those tiny details? They’re mostly irrelevant. The RV aftermarket is massive, and chances are there’s a better, more efficient, or more comfortable option available than what rolled off the factory line.

4. Never Use Your Awning In The Rain And Never Roll It Up Wet

This advice has been repeated so many times it’s practically gospel. But like most absolute rules, it misses important nuances. Yes, you should never use your awning in a heavy downpour—the weight of pooling water can absolutely buckle and destroy it. But a light rain? That’s a completely different story.

The key is understanding pitch and water management. When you angle your awning so water runs away from the door and off the edge, you can use it in light rain without any issues. It keeps your RV entrance usable and provides shelter during drizzly weather.

As for the “never roll it up wet” rule? Here’s the reality: your awning is getting wet whether it’s open or closed. When you unroll an awning that’s been stored during rainy weather, you’ll find moisture already trapped inside. Keeping it closed doesn’t magically prevent wetness.

RV owners report that the average awning replacement costs between $680 and $1,500, with motorized versions costing significantly more. So yes, you want to protect your investment. But the smart approach isn’t avoiding all moisture—it’s managing it properly.

Best practices:

Use your awning in light rain with proper pitch
Roll it up when heavy weather approaches
Unroll it on dry days to let it air out completely
Wash your awning regularly to prevent mold and mildew buildup

Inspect it periodically for any developing issues

You bought that awning to use it, not to keep it perpetually stored away like a museum piece. Just be smart about when and how you deploy it, and give it a chance to dry out afterward. That’s the real secret to awning longevity.

5. Use 100% Silicone For All Exterior RV Seals

This might be the most common—and most problematic—advice in the RV maintenance world. You’ll see it everywhere: use 100% silicone around your doors, windows, and exterior seals. It sounds logical. Silicone is waterproof, flexible, and widely available. What could go wrong?

Here’s what: silicone won’t stick to silicone. And no sealant is going to last forever. When (not if) your silicone seal eventually fails, you’ll face a nightmare repair job. You’ll have to completely remove every trace of the old silicone—around the entire perimeter of whatever you’re resealing—with zero residue left behind. Miss even a small section, and your new sealant won’t adhere properly.

According to the RV industry, most manufacturers recommend inspecting RV roofs and seals every 60-90 days. When you use silicone, you’re essentially making future maintenance exponentially harder.

The better alternative? Products like OSI Quad Max, which offer excellent stretchability, superior adhesion, and can be touched up or patched without complete removal. These advanced polyurethane sealants are specifically designed for the expansion and contraction that RVs experience.

100% Silicone	OSI Quad Max (or similar)
Can’t touch up	Repairable and patchable
Requires complete removal	Can seal over itself
Difficult to clean residue	Easier maintenance
Not paintable	Paintable surface

Think of it this way: you’re not sealing your RV once and forgetting about it. You’re entering into a long-term maintenance relationship. Choose products that make your future self’s life easier, not harder. And bonus: you can usually find OSI Quad Max at your local Lowe’s or Home Depot, so you don’t even need to wait for shipping when you need to do a quick touch-up.

6. Use Dielectric Grease To Maintain Your RV’s Power Cord Connections

Here’s a maintenance tip that sounds smart but is completely backwards: coating your RV’s power cord connections with dielectric grease. The advice typically suggests cleaning both ends of your shore power cord and applying dielectric grease to ensure good contact and prevent corrosion.

The problem? Dielectric grease is non-conductive. That’s literally its purpose. You’re putting an insulating barrier between your electrical contacts, which is the exact opposite of what you want. Plus, it attracts and holds dirt and debris, creating even more connection problems over time.

The proper product for this job is DeoxIT (specifically DeoxIT D5). This specialized contact cleaner and protectant actually enhances electrical conductivity while simultaneously protecting against oxidation and corrosion. It cleans existing corrosion, improves contact quality, and provides long-term protection.

According to RV electrical experts, poor power connections are a leading cause of RV electrical issues, from voltage drops to complete power failures. Using the wrong product only makes things worse.

What DeoxIT does:

Removes oxidation and corrosion
Improves electrical conductivity
Protects against future corrosion
Designed specifically for electrical contacts
Doesn’t attract dirt like grease does

What dielectric grease does:

Insulates against electricity (bad for power connections!)
Collects dirt and debris
Creates a barrier between contacts
Better suited for preventing moisture in non-conductive applications

You might think grease equals protection, but in the world of electrical connections, you need a product designed for conductivity, not insulation. The difference between these two products isn’t just technical—it’s the difference between reliable power and frustrating electrical gremlins.

7. Use The Zerk Fittings To Grease Your RV Wheel Bearings

This is the controversial one that gets RVers arguing every time it comes up. The “easy” method suggests popping off a couple of covers, finding the zerk fitting, jacking up your RV, spinning the wheel, and pumping in some grease. Quick, simple, and you can check “bearing maintenance” off your list. What’s not to love?

Everything. The problem is you have absolutely no idea if you’ve done anything helpful—or harmful.

When you pump grease through a zerk fitting, several things could happen:

Some grease might reach the bearings (good)
Grease might blow out the back seal (bad)
Grease might contaminate your brakes (very bad)
You might think you’re done when nothing actually improved (worst)

According to RV maintenance experts, the recommended service interval for trailer wheel bearings is 12 months or 12,000 miles. But pumping mystery amounts of grease through a zerk fitting doesn’t count as proper service.

The better approach? Pull the hub and repack your bearings the traditional way. Yes, it takes more time. Yes, it’s more involved. But here’s what you gain:

Zerk Fitting Method	Traditional Repack
No visual inspection	See actual bearing condition
Unknown grease distribution	Ensure proper coverage
Possible brake contamination	Keep grease where it belongs
False sense of security	Genuine maintenance
Can’t check for wear or damage	Catch problems before failure

Special Trailer (ST) tires have a failure rate of around 50%, while Light Truck (LT) tires fail at only 8%, according to Good Sam research. Many of these failures are related to bearing and hub issues that could have been caught during proper maintenance. With over 70,000 accidents occurring annually in the US due to tire blowouts, proper wheel maintenance isn’t just about convenience—it’s about safety.

You might feel like you’re saving time with that zerk fitting, but you’re really just gambling with your safety and your investment. When it comes to the only things keeping your RV connected to the road, don’t take shortcuts. Pull those bearings, inspect them, and pack them properly. It’s the difference between maintaining your RV and just hoping for the best.

The Bottom Line: Trust Experience Over Echo Chambers

The RV community is full of helpful people sharing advice with good intentions. But not all advice is created equal. Just because something has been repeated a thousand times on forums and Facebook groups doesn’t make it true. And just because your RV’s manual suggests something doesn’t mean there isn’t a better way.

The most successful RVers share a common trait: they question conventional wisdom and learn from actual experience. They understand that RV maintenance isn’t about following rigid rules—it’s about understanding the “why” behind each task and making informed decisions.

Whether you’re dealing with water leaks, electrical connections, or wheel bearings, the best approach is usually the one that gives you the most information and control. Quick fixes and shortcuts might seem appealing in the moment, but they often lead to bigger problems down the road.

So the next time someone insists that you must do something a certain way, take a moment to consider whether that advice actually makes sense for your situation. Your RV, your rules—as long as they’re based on sound reasoning and real-world experience.

Now get out there and enjoy the open road, armed with advice that actually works. Your RV adventures are waiting, and you’ve got the knowledge to keep your rig in top shape along the way.