Motorcycles are prone to rust from storage, humidity and short drives. Rust can cause
major damage such as roller-bearing failure, wear, compression loss and blow-by.
Good rust protection, however, comes by design and is not natural to motor oils. Unlike
many motorcycle oils, AMSOIL Synthetic V-Twin Oil contains special anti-rust agents.
It passes the ASTM D1748 humidity cabinet rust test, demonstrating superior rust
protection to help your engine achieve maximum performance and long life.