The Rust-Oleum Automotive Low VOC Professional Lacquer Thinner 1 Quart: achieves heavy-duty lacquer dilution and provides excellent leveling and gloss with lacquers and primers. This high solvency thinner is effective for diluting lacquer-based finishes. It s excellent for cleaning spray guns immediately after use for long lasting usage. The pro grade lacquer thinner offers a medium rate of drying when used within mid-range temperature conditions.