Big Twin 20w50 Power Pack Oil Package

The Big Twin 20w50 Power Pack Oil Package from Redline Oil is a comprehensive fluid service kit engineered specifically for Harley-Davidson Evolution and Twin Cam engine platforms. As a mechanic working on high-performance cruisers and touring models, you'll appreciate a solution that bundles all essential oils and maintenance items in one convenient package. This kit eliminates the guesswork during scheduled oil changes by providing the correct viscosity motor oil, transmission fluid, chain case oil, and fuel injection cleaner—all formulated to work synergistically in air-cooled Big Twin powerplants.

Redline's 20W50 formulation strikes a critical balance for cruiser applications where engine load and ambient temperature swings demand robust film strength and thermal stability. The 20-weight cold-start viscosity ensures efficient cranking in cooler conditions, while the 50-weight hot rating maintains proper bearing clearance and ring seal under sustained throttle and highway cruising loads. This package includes purpose-built transmission and chain case oils that maintain their viscosity characteristics across the wide temperature range typical of long-distance riding, plus a fuel system cleaner that removes carbon deposits and stabilizes fuel for season storage—essential for bikes that see intermittent use.

Big Twin owners—whether running Evolution engines from the 1980s–1990s or modern Twin Cam variants—benefit most from this all-in-one service approach. Harley's wet-sump design and shared lubrication galleries between engine, transmission, and primary chain mean that each fluid must meet specific anti-wear and detergent standards. The included funnel streamlines pouring and minimizes spillage in tight engine bays. Keep this kit on hand for spring shake-downs, oil change intervals, or complete fluid servicing before major tours. Compatibility spans all Evolution and Twin Cam models, making it ideal for personal maintenance shops and professional garages alike.