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Paint Protection intermediate 3 min read

Post-Trip 4x4 Cleaning Checklist

Your paint is under constant attack: UV rays, bird droppings, tree sap, and road grime. Protection isn't optional—it's essential.

Don't let that red dust or coastal salt eat your rig alive. This checklist covers exactly what you need to do once you're back from the bush or the beach to keep your paint and chassis in top nick.

SC
Sarah Chen Interior & Leather Specialist
| Updated: 17 March 2026
Post-Trip 4x4 Cleaning Checklist

Aussie Conditions

Our intense UV breaks down waxes faster than overseas. Ceramic coatings last longer, but even they need topped up more frequently here.
Quick Summary

Look, we've all been there where you get home from a long trip and just want to crack a cold one and forget the car. But I've seen too many tidy Landcruisers ruined because someone left salt or red dust sitting in the rails for a week. Honestly, I wouldn't bother waiting... the quicker you get this done, the easier it is. This is my go-to process for getting a filthy 4x4 back to showroom standard (or at least looking decent for the Monday morning commute).

01

The Gear You'll Need

What You'll Need

0/8
Pressure Washer — Something with decent punch. I use a Kranzle, but a basic Ryobi or Karcher does the job for most.
Underbody Water Broom — Don't skip this if you've been on the beach. It's a game changer for getting salt out of the chassis.
Heavy Duty Degreaser — I reckon CT18 Superwash is the king for red dust, just don't let it dry on the paint!
Iron Remover — Essential if you've been near mines or railway crossings. Something like Bowden's Own Wheely Clean works a treat.
Salt Neutraliser — If you hit the sand, use Salt-Away or similar. It actually breaks down the salt crystals.
Foam Cannon — Makes life easier and gets the suds into the hard-to-reach spots.
Long-handle Wheel Brush — For scrubbing the inside of the rim barrels and the suspension components.
Microfibre Wash Mitt — Keep one specifically for the 'dirty' lower half of the car so you don't swirl your paint.
02

Pre-Start Checklist

What You'll Need

0/4
Engine Cool-down — Never spray cold water on a hot turbo or manifold. Let it sit for 20 mins while you unpack.
Window Check — Check every single window is up tight. I learned this the hard way on a black Commodore once, interior was a swimming pool.
Electrical Covers — If you've got exposed aftermarket wiring, chuck a bit of plastic over it before you go nuts with the hose.
Drain Plug Check — Make sure your floor bungs are in if you're planning on hosing around the door sills.
03

The Cleaning Process

Tap each step to mark complete
01

Dry Blow-out

Before getting it wet, use an air compressor or leaf blower to knock off loose red dust from the engine bay and door seals.

02

The Underbody Blast

Spend a good 20 minutes under there. Use the water broom. If the water running out is still brown, you haven't finished yet.

03

Salt Neutralising

Spray your salt-dissolving solution all over the chassis and suspension. Let it dwell for 5-10 mins (don't let it dry) then rinse thoroughly.

04

Snow Foam & Pre-Soak

Coat the whole rig in thick foam. This lifts the grit off the paint so you don't scratch it when you start scrubbing.

05

Two-Bucket Wash

Wash from the roof down. Use a separate mitt for the bullbar and side steps, they're usually caked in the nastiest grit.

06

Engine Bay Wipe

A light misting only (no high pressure!). Use a damp cloth and some APC (All Purpose Cleaner) to get the dust off the plastics.

04

Final Inspection Checklist

What You'll Need

0/4
Chassis Rail Check — Stick your finger in the chassis holes. If it comes out muddy, give it another flush.
Radiator Fins — Check for seeds, grass, or bugs clogging the airflow. Be gentle cleaning these, they bend easily.
Door Jambs — Wipe these down. Dust loves to hide in the hinges and it'll grind away your paint over time.
Tyre Walls — Apply some decent tyre shine. It's not just for looks, it stops the rubber from cracking in our 40 degree heat.

A Couple of Hard Truths

A customer once brought in a Patrol that had been to K'gari (Fraser Island) and wasn't washed for a month. The salt had literally pitted the aluminium wheels. Don't be that bloke. Also, don't waste your money on those cheap 'drive-through' underbody washes at the servo, they usually just recycle salty water. Do it yourself at home with fresh tap water.

Watch Out

Avoid using high-pressure spray directly on wheel bearings, electrical sensors, or radiator fins. You'll blow the grease out of the bearings or flatten the fins, and that's an expensive arvo in the garage.

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