When it comes to car detailing, one common question we get at Keen Eyes Auto Detailing is: How much APC (All-Purpose Cleaner) soap should I use to wash my car?
Using the right amount is crucial—too little won’t clean effectively, and too much can damage surfaces or waste product.
In this guide, we’ll break down the ideal APC soap ratio, how to mix it, and what steps to follow for a safe and thorough wash.
🧼 What is APC Soap?
APC (All-Purpose Cleaner) is a powerful cleaning solution used in auto detailing to tackle stubborn dirt, grime, grease, and even bugs. Unlike traditional car shampoo, APC can be used on interiors, engines, tires, and even paint—if properly diluted.
📏 How Much APC Soap to Use?
Here’s a general guideline for dilution:
| Surface | Dilution Ratio (APC : Water) | Best Use |
|---|---|---|
| Exterior Paint | 1:10 | For pre-wash or deep cleaning |
| Tires & Wheel Wells | 1:4 | Removes brake dust & grime |
| Engine Bay | 1:3 | Breaks down grease safely |
| Interior Surfaces | 1:15 | For plastics, leather, dashboards |
💡 Pro Tip: Always read the label on your specific APC product. Different brands may have stronger or weaker concentrations.
🪣 Step-by-Step: Washing Your Car with APC Soap
Step 1: Pre-Rinse the Vehicle
Use a hose or pressure washer to remove loose dirt and debris.
Step 2: Mix APC Solution
Dilute the APC according to the surface you’re working on. For general exterior washing, use a 1:10 ratio.
Step 3: Apply APC
Use a foam cannon or spray bottle to apply the APC mixture. Let it sit for 1-2 minutes—but don’t let it dry!
Step 4: Agitate if Necessary
For tough areas like wheels or lower panels, use a soft brush or microfiber mitt to agitate the dirt.
Step 5: Rinse Thoroughly
Always rinse the vehicle well to remove all chemical residue.
Step 6: Follow with Car Shampoo (Optional)
To leave a slick, glossy finish, you can do a second round with pH-balanced car shampoo.
Step 7: Dry Safely
Use a microfiber towel or air blower to dry the vehicle, preventing water spots.
⚠️ Safety Tips When Using APC
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Never use full-strength APC on paint. It may strip wax or damage clear coat.
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Test a small area first. Especially when using on delicate surfaces like leather or chrome.
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Avoid letting APC dry on the surface. It can leave stains or damage finishes.
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Wear gloves and eye protection to avoid irritation.
Why Keen Eyes Auto Detailing Recommends APC
At Keen Eyes Auto Detailing, we believe every detail matters. APC soap, when used properly, is one of the most powerful tools in our detailing arsenal. It allows us to tackle even the toughest dirt and grime while keeping your vehicle’s surfaces safe and clean.
Whether you’re maintaining your vehicle at home or booking professional detailing, understanding the right products and techniques makes all the difference.
Final Thoughts
Using the correct amount of APC soap to wash your vehicle isn’t just about getting the job done—it’s about doing it right. Improper usage can lead to damage, while the right approach ensures a safe, showroom-ready finish.
