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Discover the power of Grandpa Bosch's Super Gloss Polish and Sealant—a trusted solution designed to bring out a deep, lasting shine while helping protect your favorite vehicles and surfaces.
🎉 You qualify for FREE SHIPPING!
Free standard shipping applies automatically at checkout.
Bring dull surfaces back to life with our advanced multi-surface polish and protective glossy sealant formula. This professional-grade instant shine polish restores brilliance, removes oxidation, and leaves behind a smooth, protective finish.
A true all in one polish, built for cars, boats, motorcycles, aircraft, chrome, fiberglass, and more.

Keeping vehicles and equipment looking their best shouldn't require a shelf full of products.
Grandpa Bosch's Super Gloss was created to simplify maintenance while delivering the rich shine and protection owners expect. From daily drivers to prized collections, it's designed to help surfaces look cleaner, brighter, and better maintained.
Feature 1
Achieve a clean, reflective finish that stands out whether you're at a car show, marina, or simply enjoying your vehicle at home.
Feature 2
Spend less time detailing and more time enjoying the results.
Feature 3
Enjoy a finish that continues to look great between applications.
Feature 4
Used by people who take pride in preserving and protecting their investments.
Watch how Grandpa Bosch's Super Gloss transforms ordinary surfaces into eye-catching finishes with remarkable clarity and depth.
Grandpa Bosch's Super Gloss is trusted by vehicle owners and enthusiasts across a wide range of applications.
Automotive
Enhance and maintain vehicle finishes with confidence.
Boats
Help preserve appearance and shine in demanding environments.
RVs
Keep recreational vehicles looking clean and well-maintained.
Motorcycles
Maintain a polished appearance on every ride.
Metal & Fiberglass Surfaces
Restore visual appeal while helping protect against everyday wear.
Ensure the area is dry and free from loose debris.
Use a microfiber cloth to apply a small amount.
Let the polish set for 15–30 minutes.
Wipe clean for a brilliant high-gloss finish.
Revives faded finishes instantly.
Seals against oxidation, moisture, and contaminants.
No machines or professional tools required.
Deep shine that lasts.
Avoid using red grease rags, as they can leave unwanted residues
For stubborn, oxidized surfaces, remove the polish while it’s still wet, or utilize a rubbing compound and then reapply a second coat of shine polish for enhanced results.
Metallic paints can sometimes present restoration challenges, and full restoration may be difficult.
Never apply the polish on hot surfaces, as heat can diminish its effectiveness and potentially damage the surface.
See how vehicle owners across the country use Grandpa Bosch's Super Gloss to maintain and showcase their prized vehicles. From classics and muscle cars to trucks and boats, customers continue to trust Super Gloss for impressive results.
Our formula is designed to simplify maintenance while delivering impressive shine and protection in an easy-to-use application.
Super Gloss is suitable for a variety of vehicle and recreational surfaces, including automotive, marine, RV, metal, and fiberglass applications.
Yes. The application process is straightforward and designed for both enthusiasts and first-time users.
Application frequency depends on usage and environmental conditions, but regular maintenance helps preserve optimal appearance.