Because it is no longer in production, your options are limited to finding old stock or switching to the industry-standard replacement: eBay : You can still find original bottles of " Pledge with Future Shine Go to product viewer dialog for this item.
Use a wide, soft flat brush. Apply in thin, even strokes. The self-leveling properties of the acrylic will usually eliminate brush marks as it dries.
Cover the part with a bowl while it dries to prevent dust from settling in the wet finish.