The Koch-Chemie Green Star is a highly concentrated, phosphate-free all purpose cleaner designed to tackle everything from heavy engine bay grease to delicate interior cleaning. Its powerful alkaline formula quickly breaks down dirt, oil, and grime while remaining safe for use on many automotive surfaces when properly diluted.

Key Features & Benefits

🔹 Highly Concentrated Formula – Dilute Green Star to match the task at hand, from heavy-duty degreasing to routine maintenance cleaning, making it an incredibly economical choice for professional detailers and enthusiasts.

🔹 Interior & Exterior Versatility – Safely cleans engine bays, wheel wells, tires, plastics, upholstery, carpets, vinyl, rubber, and more with the proper dilution ratio.

🔹 Powerful Dirt & Oil Removal – Advanced alkaline cleaning agents penetrate and lift stubborn grease, road film, oils, and organic contamination with minimal effort.

🔹 Corrosion Inhibitors Included – Special inhibitors help protect sensitive materials such as anodized aluminum while maintaining strong cleaning performance.

🔹 Phosphate & Solvent Free – Environmentally conscious formulation without sacrificing cleaning power.

How to Use

For Exterior Cleaning

Step 1: Dilute Green Star according to the level of contamination.

Step 2: Apply directly to the surface using a spray bottle, pump sprayer, foam sprayer, or wash media.

Step 3: Allow the product to dwell briefly without drying on the surface.

Step 4: Agitate if necessary using a detailing brush, wash mitt, or microfiber towel.

Step 5: Thoroughly rinse with water.

For Interior Cleaning

Step 1: Dilute Green Star according to the material being cleaned.

Step 2: Apply to a microfiber towel, brush, or directly onto the surface.

Step 3: Agitate lightly to loosen contamination.

Step 4: Wipe clean with a damp microfiber towel or extract using appropriate equipment.

Pro Tip

For heavily soiled carpets and upholstery, Green Star works exceptionally well as a pre-treatment before extraction. When using carpet extractors or spray extraction machines, pair it with Koch-Chemie Kocentschäumer Foam Inhibitor to reduce excessive foam buildup and improve machine performance.

Dilution Ratios

Heavy-Duty Cleaning

Extreme Cleaning & Degreasing – 1:3

Engine Bays, Undercarriages & Heavy Grease Removal – 1:5

Medium-Duty Cleaning

Wheel Wells, Door Jambs & Exterior Pre-Cleaning – 1:10

Interior Plastics, Upholstery & Carpets – 1:10

Maintenance Cleaning

Routine Exterior Cleaning – 1:30

Dashboards, Trim & Light Interior Cleaning – 1:20

Why We Love It

At Car Supplies Warehouse, Green Star has become one of our go-to all purpose cleaners because of its incredible versatility and cleaning power. Instead of stocking multiple cleaners for different tasks, Green Star can handle everything from filthy engine bays and wheel wells to interior plastics and carpet cleaning with a simple dilution adjustment. We especially appreciate how economical it is for professional detailers while still being safe on sensitive surfaces when used properly. It's one of those products that earns a permanent place in almost every detailing setup.

Compatible With / Works Best With

✅ Koch-Chemie Top Star – Clean interior plastics and vinyl with Green Star, then restore a factory-new appearance and UV protection with Top Star's premium interior dressing.

✅ Koch-Chemie Pol Star – A perfect companion for interior detailing, safely cleaning upholstery, carpets, and leather after Green Star has handled the toughest grime.

✅ The Rag Company Edgeless 245 Microfiber Towel – Excellent for wiping away Green Star residue from interior and exterior surfaces while providing a soft, scratch-free finish.

Frequently Asked Questions

❓ Can Green Star be used on vehicle interiors?

💡 Yes. When properly diluted, Green Star is safe for cleaning interior plastics, vinyl, carpets, upholstery, floor mats, and many other interior surfaces.

❓ Can Green Star be used in an engine bay?

💡 Absolutely. Green Star is one of the most popular engine bay cleaners in professional detailing and excels at breaking down grease, oil, and road grime.

❓ Does Green Star need to be rinsed?

💡 Exterior applications should always be rinsed thoroughly. For interior applications, wipe away residue with a damp microfiber towel or extract from fabric surfaces as needed.

❓ Is Green Star safe on coated vehicles?

💡 When properly diluted and not allowed to dry on the surface, Green Star can be safely used for many cleaning tasks on coated vehicles. Always use the least aggressive dilution necessary and rinse thoroughly.

Technical Specifications

📏 Available Sizes: 1 Liter, 5 Liter and selected bulk sizes

🧴 Formula Type: Concentrated alkaline all purpose cleaner

💨 Scent: Mild

🚗 Application Type: Spray bottle, pump sprayer, foam sprayer, brush application, extraction equipment, hand cleaning

🌱 Phosphate Free: Yes

🛡 Corrosion Inhibitors: Yes

Important Notes & Warnings

⚠️ Do not use on hot surfaces.

⚠️ Do not allow the product to dry on the surface.

⚠️ Always test on an inconspicuous area before full application.

⚠️ Follow recommended dilution ratios for the surface being cleaned.