Designed for hard-working vehicles that live in severe service. Handles heat so well, you can confidently double your vehicle manufacturer’s severe-service drain interval with guaranteed AMSOIL protection. AMSOIL Signature Series Synthetic Automatic Transmission Fluid Challenges Faced by Vehicle Transmissions Commercial vehicles, SUVs, trucks, and vans face severe service conditions and increased heat. High temperatures lead … Continue reading Signature Series Multi-Vehicle Synthetic Automatic Transmission Fluid