DescriptionHygroscopic contamination (moisture ingress) lowers boiling points, causes corrosion, and leads to fade. AMSOIL DOT 3 & 4 counters this with superior wet boiling points, robust corrosion protection, and a nitrogen-blanketed bottle that helps keep moisture out for maximum performance.Why It’s BetterFights water contamination: Maintains high boiling points and resists acid formation; protects lines, seals & calipers.Firm, reliable pedal: Chemistry resists vapor lock—even when contaminated with 3.7% water—for consistent braking under extreme heat/pressure.ABS & traction control ready: Low viscosity (817 cSt) for fast cold-weather response and stable flow at high pressures.Broad spec coverage: Meets/exceeds DOT 3, DOT 4, and DOT 5.1 performance requirements.Directions for UseUse in passenger cars, light trucks, and powersports where DOT 3, 4, or 5.1 is specified. Do not mix with DOT 5 (silicone). Follow your owner’s manual for the correct DOT classification and change every two years for peak performance.Shop OnlineExplore our full range of Oils & Lubricants online.
