What You'll Learn
Aussie Conditions
Look, we all love a run up Noosa North Shore or a weekend at Robe, but the cleanup is the part most blokes mess up. Whether you're dealing with fine white sand or that sticky coastal salt spray, just a quick spray at the local DIY wash won't cut it. This guide covers exactly how I clean my own 4WD and my customers' rigs to make sure they don't turn into a bucket of rust in six months.
The Reality of Salt and Sand
The Gear You'll Need
What You'll Need
While you're here...
Before You Start
Park in the Shade
Never wash a salty car in the direct Aussie sun. The water evaporates too fast, leaving the salt to bake back onto the paint. Find a shady spot or wait until the arvo.
Cool the Brakes
Give your rotors a chance to cool down before you blast them with cold water. I've seen mates warp their discs because they were too keen to start washing.
Open Everything Up
Pop the bonnet, open the fuel filler flap, and open the tailgate. Sand gets everywhere, and I mean everywhere.
The Step-by-Step Deep Clean
The Dry Blowout
Before you get anything wet, use an air compressor or leaf blower to blow out the loose sand from the window seals, door shuts, and engine bay. If you wet it first, it just turns into mud and hides in the corners.
Heavy Underbody Rinse
Chuck your underbody attachment on the pressure washer. Spend a good 20 minutes here. You want to see the water running clear from the chassis rails. If you don't have a water broom, just use the wand, but get right under there. Use a salt neutraliser in your foam cannon and blast the whole underside.
Engine Bay Wipe Down
Don't go nuts with the pressure washer here. Use a damp cloth and some APC (All Purpose Cleaner) to wipe away salt spray from the battery terminals and intake. Be careful of the electrical bits, I learned that the hard way on a modern Hilux once.
Wheel Arch Deep Clean
Remove the wheels if you're feeling keen, but at least get a brush in there. Scrub the suspension arms and the back of the brake calipers. This is where salt loves to hide and start pitting the metal.
Snow Foam Pre-Wash
Cover the whole car in a thick layer of foam. Let it dwell for 5-10 minutes (but don't let it dry!). This encapsulates the sand particles so they slide off without scratching your clear coat.
The First Rinse
Rinse from the top down. Pay massive attention to the gutters, the snorkel join, and behind the spare tyre if you've got a rear-mounted one.
Two-Bucket Wash
Now go in with your wash mitt. One bucket for soapy water, one for rinsing your mitt. If you feel even a tiny bit of grit in the mitt, rinse it out immediately. (Your paint will thank you).
Door Shuts and Seals
Clean the inside of the door frames. Salt spray gets sucked into the door seals while you're driving. If you leave it, it'll rot the bottom of the doors.
Final Rinse with Salt Neutraliser
I like to do one final pass with a very diluted salt neutraliser over the whole car, then a quick final rinse with fresh water.
The Drying Phase
Use a dedicated drying towel or that leaf blower again. Getting the water out of the lug nuts and window tracks is the only way to stop those annoying run-lines later.
Pro Tip: The Chassis Flush
Watch Out
Protection for Next Time
Watch Out
Common Questions
Can't I just go through an automatic car wash?
Is WD-40 good for the underbody?
How soon do I need to wash it?
Do I need to grease my uni-joints after the beach?
Trusted by 50,000+ Aussie car owners
Professional advice for Australian conditions
Products We Recommend
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
Keep Reading
Beach Drive Post-Wash Checklist
Salt and sand are absolute car killers if you don't get them off properly. This checklist covers the gear and the steps you need to stop your chassis from rotting out after a weekend on the dunes.
Saving Your Rig From Salt: The Real Way To Clean Up After The Beach
Driving on the sand is the best part of owning a 4WD, but salt and sand are absolute killers for Aussie steel. This guide shows you how to properly flush your underbody and protect your paint so your pride and joy doesn't turn into a rust bucket.
Stop Your Chassis From Rotting Away (Mar 2026)
A clean car is great, but it's what's underneath that's usually dying a slow death. Between the salt spray on the coast and that nasty red dust out west, your undercarriage needs more than just a quick spray at the servo.
Keeping the Rot Out: The Real Way to Protect Your Undercarriage
Most people wash their car and forget about the bits they can't see. But in Australia, the real damage happens underneath where salt, red dust, and mud hide in the chassis rails. Here is how to seal up your undercarriage properly so it doesn't crumble like a dry biscuit in five years.

