AMSOIL Signature Series ULV 100% Synthetic Automatic Transmission Fluid Withstands the rigors of heavy towing, elevated temperatures and challenging terrain, Remains fluid in sub-zero temperatures, Provides reserve protection during heavy use and abuse, 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., See the Product Data Bulletin for full details., RESERVE PROTECTION AGAINST HEAT AFTER 180,000 MILES, A18, ABOT test performed by independent lab based on total acid number (TAN)., RESERVE PROTECTION AGAINST HEAT AFTER 180,000 MILESRESERVE PROTECTION AGAINST HEAT AFTER 180,000 MILES, The transmission’s valve body is clean and virtually sludge-free following 180,000 severe-service miles. The clutch plates demonstrated only trace discoloration and earned a rating of “good,” the highest possible, for deterioration/wear.,