ATV Trail 10W-40 1 Liter. Bel-Ray ATV Trail Mineral 4T Engine Oil with Rust Resistance System is a premium multi-grade 4-stroke ATV oil for the unique requirements of all 4-stroke ATVs, Quads and UTVs. Equally suitable for air-cooled / liquid-cooled 4-stroke engines. Wear protection extends the life of the engine.