2000 Scrambler 400
I only think AMSOIL Products but here is what the Polaris Lube Spec charter has to say about capacities etc.
Engine - AMSOIL HP Injector (HPI) - Very Good; AMSOIL Interceptor (AIT) - Excellent
Transmission - 32oz capacity 4x4; 11oz capacity 2x4 - AMSOIL Synthetic Chaincase & Gear Oil (TCCCN 16oz)
Rear Differential 4x4 & 2x4 4-oz - AMSOIL Severe Gear 75W-90 (SVG)
Front hubs 4x4 5-oz cap- AMSOIL Multi-Vehicle Automatic Transmission Fluid (ATF)
Guide recommends replacing brake fluid every 2 yrs with DOT4 - AMSOIL High Performance Brake Fluid (B4FSN)
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More Lube Info here