Pupil Transportation

Hydrotex supports school districts and pupil transportation fleets with high-performance lubricants and fuel solutions that improve reliability, extend equipment life, and reduce maintenance labor—helping you keep buses safe, efficient, and on the road. As fleet ages rise and technicians face increasing workloads, Hydrotex partnerships help districts overcome maintenance challenges with proven programs used by hundreds of fleets across the country.

Fuel Improvers & Conditioning Agents

Hydrotex fuel improvers enhance efficiency, protect fuel systems, and improve cold-weather performance.

  • Power Kleen™ – multi-functional diesel fuel improver that cleans injectors, lubricates components, improves economy, and reduces emissions.
  • Power Kleen™ Arctic – adds cold-flow protection and wax crystal modifiers to prevent gelling and icing during winter operation.
  • Essentialube® – protects against corrosion, water, and deposit formation while improving combustion and fuel economy in gasoline, diesel, and lubricating oils.
  • Injector-Kleen™ – removes combustion deposits, gum, and varnish in gasoline engines to maintain horsepower and fuel efficiency.

Engine Oils for School Bus Fleets

  • HyFilm® LEO Heavy Duty Engine Oil – exceeds API CK-4 and OEM requirements; reduces wear, extends oil change intervals, and improves fuel efficiency in diesel fleets.
  • HyFilm LEO EPG – for gasoline-powered buses and service vehicles; exceeds API SP and OEM specs for long-lasting protection.
  • HyFilm LEO G92 – formulated for natural gas engines (Cummins-Westport conversions); controls acids, prevents valve recession, and extends lubricant life.

Transmission Fluids

  • Hy-Torque® – delivers superior protection under high heat, torque, and load; lowers operating temperatures; and has been shown to extend service intervals by up to 300% when paired with oil analysis.

Gear Lubricants

  • Hydro-Syn™ EP – all-season gear oil with strong extreme-pressure protection for hypoid differentials and severe-duty conditions.
  • Multi-Film® – rugged EP protection with Resilium® additive technology to keep gears coated and prevent dry startups.

Greases for Fleet Reliability

  • HyPlex™ – premium lithium complex grease for wheel bearings, chassis points, and high-speed/high-heat components; GC-LB rated for maximum durability.
  • MTP Ultra™ – tacky EP grease for bearings, pins, bushings, and components exposed to heavy loads, water washout, and frequent use.