COLLINITE 920 Cleaner-MarineRV Stain, Water Spot & Oxidation Remover. Easy to Use Heavy Duty Cleaning Compound Restores ShineEnhances Look. Preps

The Collinite No. 920 Fiberglass Marine Cleaner has garnered a mixed reception among customers, reflecting a range of experiences with its cleaning capabilities and application. Many users praise the product for its ability to revitalize older fiberglass, with one user noting how their 42-year-old gelcoat sparkles after regular yearly use. The cleaner is recognized for its effectiveness in delivering a clean surface, making it a trusted choice for maintaining boats. However, there are practical concerns raised about the quantity needed for a thorough application. Users report that an entire bottle may be required for larger boats, which some find to be a drawback. The application method has also been critiqued; customers wish for a more user-friendly design that allows for easier dispensing, as removing the top can be cumbersome. Another point of contention is the cleaner's performance on heavily discolored areas; while it works well for general dirt and light oxidation, some users found that acetone was more effective on tough stains. A few customers expressed disappointment when using the product with a Dual Action (DA) polisher, especially in less-than-ideal weather conditions, which led to drying issues and difficulty in removal. Overall, Collinite No. 920 appears to be a solid choice for regular maintenance of fiberglass surfaces, particularly for those who regularly wax and care for their boats, but may not be the best solution for heavily oxidized surfaces or for users who prefer rapid application. **