How to Dry a Truck Without Swirls: A Detailer's Method

Most of what rolls into our bay is a truck or a full-size SUV. A lot of the swirls I polish out on those trucks were not put there by the car wash. They went in during drying, with a thin towel, a lot of passes and too much pressure on a big flat hood. Drying is the step people rush, and on a truck it is the step with the most paint to cover.

Here is exactly how I dry a truck in the studio, start to finish. No secret products, just the order I do it in and why.

That is a Ford Raptor I filmed in the bay a while back with the oversized Slurpy we ran at the time. The towel we run on trucks today is the SLURPY MAXX 26×34. Same idea: lay it, drag it, do not scrub.

Why trucks swirl during drying

Three things stack up on a truck:

• Surface area. A crew cab hood and roof hold a lot of water. A small towel loads up halfway across the panel, and a loaded towel drags instead of absorbing.
• Height. You are reaching across a roof you can barely see, so you lean on the towel. Leaning means pressure, and pressure is what puts marring in soft clear coat.
• Grit you missed. Lower rockers, behind the wheels and the tailgate edge hold the most dirt. Dry those first and you can carry grit up onto the hood.

Fix all three and most drying swirls go away. Here is how.

What you need

• A big, heavy twisted-loop towel for the large panels: SLURPY MAXX, 26 × 34 inches, 1700 GSM, hidden edge. It covers a roof or hood in one lay.
• A second, smaller towel for doors, mirrors and the lower third: the SLURPY 20×30.
• A drying aid, which is just a light spray that adds lubrication between the towel and the paint. I use Katch 22 so the truck gets SiC protection on the same pass.
• The Swiss 16×16 buffing towels for a final wipe on any streaks.
• An empty bucket to wring into. Not the ground.

Step 1: Make sure the truck is actually clean

A drying towel is not a wash mitt. If there is grit on the paint, no towel in the world will save it. Wash with a pH-neutral soap like AQUA-SUDS and a clean wash mitt, top to bottom, rinsing the mitt between panels. On bug-heavy fronts, pre-treat with BUGZ B GONE first so you are not scrubbing bugs off with the mitt.

Then do a slow, full rinse from the top down. Use a free-flowing hose with no nozzle for the last pass. The water sheets off in a curtain and takes most of the standing water with it, so the towel has less work to do.

Step 2: Work in the shade, top down

In hot weather, water spots can etch in before you get around the truck. Pull it into shade if you can, and work fast on dark paint. Always dry in the same order:

1. Roof
2. Glass
3. Hood
4. Upper sides and doors
5. Tailgate and bed caps
6. Lower third: rockers, behind the wheels and bumpers last

Top down means the cleanest panels get the cleanest towel. The lower third gets the second towel, so the dirtiest part of the truck never touches the towel that goes on the hood.

Step 3: Mist the drying aid

Mist one or two sprays of Katch 22 onto the wet panel, or onto the towel. You are not trying to coat anything heavy. You just want the towel to glide. Lubrication is what lets you use light pressure, and light pressure is the whole game.

Step 4: Lay it flat and drag. Do not scrub.

This is the part that matters most. Open the SLURPY MAXX fully, lay it flat across the roof or hood, and pat it down so it makes contact. Then grab two corners and pull it toward you slowly, letting its own weight do the work. One drag, maybe two. No circles, no scrubbing, no folding it into a little ball and rubbing.

On a roof you cannot reach, stand on a step stool instead of leaning on the towel across the panel. Pressure from leaning is where I see the most drying marks on trucks.

Step 5: Wring between panels

A loaded towel stops absorbing and starts pushing water around. Wring it into your empty bucket after the roof and the hood. A 1700 GSM towel holds a lot, but a truck holds more.

Step 6: Switch towels for the lower third

Doors, mirrors, the tailgate and the lower panels get the SLURPY 20×30 folded into a pad. Lay, pat, drag. Do the rockers and the areas behind the wheels last. If that towel picks up something gritty, it goes in the wash bin and does not go back on the paint.

Step 7: Blow out the drips, then a final buff

Mirrors, door handles, the fuel door, the tailgate seam and the grille will drip for ten minutes. Hit them with a blower or a quick pat. Then walk the truck with a clean face of The Swiss and buff off any streaks or leftover drying aid.

Towel care keeps the towel safe

A dirty or fried drying towel is a swirl machine. After every truck:

• Wash microfiber separately from cotton.
• No fabric softener and no bleach. Softener clogs the loops.
• Tumble dry low or air dry.
• Keep the drying towels for drying only. Do not use them for buffing off sealant or wiping wheels.

The short version

Clean truck, shade, top down, a light mist of drying aid, one big towel laid flat and dragged with no scrubbing, a second towel for the dirty lower third, wring often. That is how we dry every truck that comes through the studio.

If you are drying a lot of trucks or SUVs, the SLURPY MAXX is the one I would start with. For sedans and coupes, the SLURPY 20×30 covers it. Browse the full Dry & Buff lineup, and if you want to see more of these real jobs, the YouTube channel has years of them.

Questions on your truck? Email info@aqualuxdetail.store. I read them.

Landon Crawford
USMC veteran, owner of Aqualux Detail Supply