Trusted by 50,000+ Aussie drivers
Car Washing & Drying intermediate 11 min read

Keeping Your Snorkel and Roof Rack Mint: The Real Way to Clean Offroad Gear

Most car owners make this harder than it needs to be. Here's the straightforward approach that actually works—no fluff, no upselling.

Struggling with red dust in your snorkel or salt crusting up your roof rack? These high-reach components are the hardest to clean but the most prone to UV damage and corrosion in the Aussie summer.

MT
Mick Thompson Senior Detailing Editor
| Updated: 27 February 2026
Keeping Your Snorkel and Roof Rack Mint: The Real Way to Clean Offroad Gear

Aussie Conditions

Australian conditions are tougher than most—intense UV, red dust, coastal salt, and 40°C summers. European car care advice often doesn't cut it here.
Quick Summary

Look, most people ignore their roof racks and snorkels until the plastic turns grey or the bolts are rusted shut. This guide covers how to deep clean and protect your offroad hardware from the brutal February heat, red dirt, and coastal salt. I've spent 15 years cleaning everything from kitted-out 70 Series Cruisers to weekend warriors, and I'll show you the tricks to keep your gear looking new without spending all day on a ladder.

01

Why Your Roof Gear is Copping a Beating

Right, let's have a yarn about the bits of your car that most blokes forget until they've already started fading. It's February in Australia, it's 42 degrees in the shade, and your snorkel and roof rack are sitting right up there taking the full brunt of the UV. If you've just come back from a trip up the Cape or a run through the Red Centre, your gear isn't just dirty, it's being eaten. Red dust is abrasive as hell, and if you live near the coast, that salt spray is basically working like a slow-motion acid on your rack's powder coating. I learned this the hard way when I bought my first kitted-out Hilux years ago. I thought a quick blast at the local DIY wash was enough. Six months later, the Safari snorkel had gone from a nice deep black to a chalky grey, and the cheap roof rack was bleeding rust onto my white roof. It looked terrible and, honestly, it killed the resale value. Since then, I've spent 15 years figuring out how to stop that happening. Thing is, snorkels and racks are awkward. You've got tight gaps, textured plastics that love to hold onto dirt, and they're usually just out of easy reach. Most people 'she'll be right' it, but then they wonder why their $1,500 platform rack looks like it's been pulled from a shipwreck after two summers. In this heat, bird droppings and bat piss will etch into your gear in literally hours. To be honest, if you aren't protecting these parts, you're just throwing money away. We're going to go through how to get the red dirt out of the nooks, how to stop the sun from killing the plastic, and how to make sure your rack doesn't start rattling or rusting because you ignored the mounting points.
02

The Gear You Actually Need

What You'll Need

0/13
A stable step ladder — Don't try to stand on your tyres or door sills while holding a pressure washer. I've seen a mate do his back in doing that. Get a proper 3-step platform.
Dedicated Trim Cleaner or APC — Something like Bowden's Own 'Agent Orange' or a decent All Purpose Cleaner diluted 1:10. Don't use dish soap, it'll strip any remaining oils out of the plastic.
Soft-bristled detailing brushes — You need these for the honeycomb mesh on the snorkel head and the channels in the roof rack. A 1-inch brush is perfect.
Long-reach wheel brush — Actually works wonders for getting between the roof and the rack platform where your hand won't fit.
Microfiber wash mitt — Keep one specifically for the 'dirty' jobs so you don't scratch your main paintwork later.
Pressure washer with a wide nozzle — Use the 40-degree tip. Never use a 'turbo' or 'pencil' jet on plastic trim or you'll leave permanent marks.
Clay bar or clay mitt — For the metal parts of the rack that feel 'gritty' from fallout or salt.
Quality Plastic Restorer/Protectant — I swear by Gtechniq C4 for long-term, but for a quicker job, Meguiar's Ultimate Black is decent. Must have UV inhibitors.
Ceramic Spray Sealant — For the powder-coated metal. It makes the next wash ten times easier because the dust won't stick.
Compressed air or a leaf blower — Vital for getting water out of the snorkel head and rack channels so it doesn't drip and leave streaks.
pH Neutral Car Wash — Your standard bucket soap. I'm a fan of Meguiar's Gold Class for general lubrication.
Non-acidic Iron Remover — Optional, but great if you've been near trains or heavy industry to get those metal particles off the rack.
Thread locker (Blue) — For when you're checking the rack bolts later. Loctite 243 is the go-to.
03

Setting Yourself Up for Success

Tap each step to mark complete
01

Cool the surface down

Never, ever wash a car that's been sitting in the Feb sun. Move it into the shade or wait for the arvo. If the metal is hot to the touch, your chemicals will dry instantly and leave nasty spots.

02

Inspect for Loose Gear

Give the rack a good shake. If it's wobbling, you've got loose bolts. Better to find out now than when you're doing 100km/h on the highway.

03

Clear the area

If you've got recovery tracks, shovels, or awnings attached, chuck 'em off if you can. You can't clean what's underneath them properly while they're mounted.

04

Masking (The Pro Move)

If you're using a heavy-duty plastic restorer later, use some blue painter's tape on the paintwork where the snorkel meets the A-pillar. It saves a lot of cleanup work.

05

Check the Snorkel Drain

Check the little duck-bill valve at the bottom of the snorkel airbox. If it's clogged with mud, the water you're about to spray in there might not drain out.

04

The Deep Clean: Step-by-Step

Tap each step to mark complete
01

The Initial Rinse

Blast the snorkel head and the rack with water. Focus on the underside of the rack and the gaps between the rails. This is where the salt likes to hide.

02

Pre-Soak with APC

Spray your diluted All Purpose Cleaner over the snorkel and rack. Let it sit for 2-3 minutes, but don't let it dry. This breaks down the 'traffic film' and greasy road grime.

03

Agitate the Snorkel Head

Use your detailing brush to get into the grill of the snorkel. A customer once brought in a rig where a wasp had built a nest in there, use the brush to clear any debris.

04

Scrub the Snorkel Body

Use a wash mitt with soapy water. Snorkels are usually textured plastic, so you need to really work the suds in to get the red dust out of the 'pores'.

05

Flush the Snorkel Intake

Be careful here. Direct the water hit the snorkel head from an angle, not straight down the pipe. You want to rinse the mesh, not drown your air filter.

06

Clean the Rack Channels

Most modern racks (Rhino-Rack, Yakima, etc.) have T-slots. These are magnets for dirt. Run your brush through every single channel.

07

The Under-Rack Reach

Use your long-reach brush to clean the roof of the car underneath the rack. If you leave dirt here, it'll hold moisture and eventually cause rust or paint damage.

08

Rinse Thoroughly

Rinse from the top down. Ensure no soap bubbles are clinging to the mounting brackets or the snorkel seals.

09

Decontaminate the Metal

If the rack feels rough, spray some iron remover on it. If it turns purple, it's working. Rinse it off after a minute.

10

The Blow Dry

Use your leaf blower to blast water out of the snorkel's internal lip and the rack's bolt holes. This prevents those annoying 'runny nose' drips later.

11

Final Microfiber Wipe

Wipe everything down with a clean, dry microfiber. Make sure the plastic is completely dry before moving to protection.

12

Restore the Plastic

Apply your trim restorer to the snorkel. Work in small sections. This is the only method I trust for keeping that 'factory' look. Don't use 'tyre shine', it's too greasy and will attract dust instantly.

13

Seal the Rack

Apply a spray ceramic sealant or a good wax to the metal parts of the rack. This keeps the UV from chalking the powder coat.

14

Check the Fittings

Once dry, check the bolts. If any are loose, give them a dab of blue Loctite and tighten them up. (Your partner will thank you when the rack stops whistling on the highway).

Watch Out

Look, I've seen some shockers. Don't use a pressure washer too close to the snorkel's entry point, you'll soak your air filter and could potentially hydrolock your engine if you're really unlucky. Also, stay away from 'back-to-black' products that are oil-based; they'll look good for two days then turn into a sticky mess that traps red dust like a magnet. Made this mistake myself on a black Commodore years ago, never again. Lastly, don't use abrasive 'scouring' pads on powder-coated racks; once you scratch that finish, rust will move in faster than a seagull on a hot chip.

Detailer's Secrets

Pro tip: If you've got stubborn red dust that won't budge from the snorkel's texture, use a very soft toothbrush and some undiluted APC. The tiny bristles can reach where a wash mitt can't. Also, if your roof rack has rubber infill strips that have gone grey, take them out and soak them in a bucket of warm soapy water with a splash of 303 Protectant. They'll come up like new. Another one, if you're heading to the beach, spray a light coat of lanolin spray on the rack's bolts and hardware. It's messy, but it's the best way to stop salt corrosion in its tracks.
05

Maintenance and Aftercare

Right, so you've got it looking mint. How do you keep it that way? Honestly, the best thing you can do is a 'maintenance wash' every couple of weeks, especially in summer. If you've parked under a gum tree, get that sap off immediately. Gum sap is like glue in the heat and it'll ruin the finish on your rack. After 15 years doing this, I've found that applying a fresh layer of ceramic spray sealant every 3 months is the sweet spot. It takes 5 minutes but adds a massive amount of UV protection. If you notice the snorkel starting to look a bit 'thirsty' or dull, don't wait for it to go grey, hit it with a bit of protectant then and there. Regular maintenance is heaps easier than trying to restore sun-damaged plastic after the fact. And yeah, that's pretty much it for the day-to-day stuff.
06

Advanced Techniques for the Enthusiast

If you really want to go the extra mile, you can look at 'claying' your roof rack's metal surfaces. It sounds overkill, but if you've been driving through industrial areas or near the coast, your rack will have 'embedded contaminants'. Using a clay bar with plenty of lubricant will make the powder coat feel smooth as glass. Another advanced move is the 'Snorkel Seal Check'. Every six months, I reckon you should loosen the clamps on your snorkel joiners and check for any dust bypass. If you see dust inside the tube past the filter, your seals are gone. I usually apply a tiny bit of sensor-safe silicone sealant to the joins during a deep clean to ensure it's 100% airtight. Some people swear by wrapping their racks in PPF (Paint Protection Film), but I think that's a bit much for an offroader, stick to a good ceramic coating.
07

Product Recommendations

I'm pretty opinionated when it comes to products because I've wasted so much money on gear that doesn't work. For the snorkel, my go-to is **Gtechniq C4 Permanent Trim Restorer**. It's expensive, but it actually bonds to the plastic and lasts a year, not a week. For the roof rack, **Bowden's Own Bead Machine** is a cracker of a sealant that handles the Aussie sun really well. Don't waste your money on those cheap 'silicone sprays' from the servo. They'll make things shiny for an arvo, but the silicone often dries out the plastic over time and makes the UV damage worse. If you're on a budget, **303 Aerospace Protectant** is the silver bullet for anything rubber or plastic. It's basically sunscreen for your car gear.
08

Common Questions

Can I go through an automatic car wash with a snorkel and rack?
I wouldn't risk it. Those big brushes can snag on the rack or pull at the snorkel mounts. Plus, they use recycled water that's often full of salt and harsh chemicals. Hand wash only, mate.
How do I get red dust out of the snorkel's internal pipe?
Carefully. Remove the head, use a damp microfiber on a stick to wipe the internals as far as you can reach. Don't spray water down there unless the airbox drain is open and you're far away from the intake.
My roof rack is whistling after I cleaned it. What happened?
You probably forgot to put the rubber infill strips back in or they aren't seated right. Those strips are there specifically to stop the wind noise.
Is it okay to use WD-40 on my roof rack bolts?
It's alright for loosening stuck ones, but it's not a long-term lubricant. Use a proper anti-seize or lanolin spray for protection.
How often should I clean my snorkel's pre-filter?
If you're in the dust, check it every day. For city driving, once a month is plenty. Just tap it out or use a low-pressure air hose.

Trusted by 50,000+ Aussie car owners

Professional advice for Australian conditions

4.9/5
4,600+ Guides

Products We Recommend

View All →
pH Neutral Snow Foam
Bowden's Own

pH Neutral Snow Foam

$39.95 View
The Rag Company

Microfibre Towels 400GSM (10-Pack)

$39.95 View
Iron Remover / Wheel Cleaner
CarPro

Iron Remover / Wheel Cleaner

$29.95 View
Ceramic Coating 9H
Gyeon

Ceramic Coating 9H

$89.95 View

Keep Learning

Ready to level up your car care?

You've got the knowledge—now put it into action. Explore more guides or check out our recommended products.

Get Weekly Car Care Tips

Join 12,000+ Aussie car enthusiasts

Browse All Guides

Keep Reading