Speedmaster™ racing hose is compatible with petroleum and synthetic lubricants, hydrocarbon fuels and liquid engine coolants, it operates at higher temperatures for longer periods. Light and flexible, it is easy to work with and its stainless steel cover will ensure long-lasting durability. Synthetic rubber inner tube that is resistant to oxidation, the effects of ozone and other various agents present in the air. Changes in physical properties due to shelf aging are nonexistent. Not to be used with methanol.