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Exterior · 4 of 10
Exterior Wash & Clay Bar
Wash top to bottom, decontaminate the paint, dry without spots.
What you’ll need
- Car wash soap (CH47 or M80)
- Two buckets (soap and rinse) with grit guards, wash mitt
- Pressure washer
- Clay bar or clay mitt, and clay lube (soapy water in a spray bottle works)
- Auto body solvent (M136) for tar, sap and sticker glue
- Spray sealant / ceramic spray (M67)
- Drying towels and an air gun
- Safety glasses and 5-mil nitrile gloves
Before you start
- Inspect and report damage first — scratches, dents, chips.
- Work in the shade on cool panels. Sun and heat dry soap into spots.
- Wheels and tires first (see Wheels, Tires & Wells).
- Keep the pressure washer nozzle 6 to 8 inches from the paint. Closer can peel paint, emblems and trim.
Wash steps
- Rinse the whole vehicle top to bottom.
- Soap it with car wash soap (CH47 or M80).
- Wash top to bottom in straight lines. Dip the mitt in the rinse bucket after every panel.
- Lower doors and bumpers last — that’s where the grit is.
- Spot-treat tar or sap with auto body solvent (M136) on a towel, then rewash that spot.
- Rinse top to bottom, getting soap out of gaps, mirrors and the grille.
Clay bar steps
- Feel the paint through a plastic sandwich bag. Gritty = it needs clay.
- Spray lube on a 2 ft × 2 ft section. Always keep it wet.
- Glide the clay back and forth with light pressure until it moves smooth and quiet.
- Wipe the section and feel it again.
- Fold the clay to a clean face when it looks dirty.
- Dropped the clay? Throw it away. It picked up grit that will scratch the paint.
Drying & protect
- Final rinse, then dry with drying towels — lay and pull, don’t scrub.
- Blow out mirrors, emblems, grille, lights and door handles so they don’t drip later.
- Mist spray sealant (M67) on one panel at a time, spread with a microfiber, flip and buff.
- Clean the glass inside and out last.
Quality check
- Paint feels smooth, no water spots or soap streaks
- No drips from mirrors or trim 10 minutes later
- Glass streak-free at an angle
- Jambs done too (see Door Jambs)
