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PRI-D diesel treatment and PRI-G gasoline treatment provide RV operators with peace of mind as they travel. The operator can be assured that interrupted vacations due to fuel problems will be virtually a thing of the past. Simply stated, PRI chemistries offer an unequalled level of protection against fuel related engine failures.

Formulated with our industrial grade chemistries, PRI-D is ideal for the nation's new ultra-low sulfur (ULSD) diesel fuels. The enhanced lubricity additive package has been proven to reduce injector pump wear rates from 20-to-40 percent.

Additionally, PRI-D:

  • Provides fuel economy
  • Increases engine power and reliability
  • Enhances ignition quality
  • Significantly cuts diesel smoke and soot
  • Prevents damaging, power-robbing deposits
  • Keeps fuel fresh during long layup periods
  • Restores stale and degraded fuel to freshness
  • Keeps fuel systems and filters clean
Our updated PRI-G formula for gasoline vehicles has been carefully developed and tested to handle ethanol-based E-10 fuels. PRI-G is now formulated to retard phase separation. New PRI-G continues to provide the bundle of benefits its users have come to rely on:
  • Increases fuel efficiency
  • Improves ignition quality
  • Provides greater power
  • Prevents damaging, power-robbing deposits
  • Protects against E-10 phase separation
  • Keeps fuel fresh during long layup periods
  • Restores stale and degraded fuel to freshness
  • Keeps fuel systems and filters clean


  • PRI-D
    Industrial-Grade Diesel Treatment
  • PRI-G
    Complete Gasoline Treatment
  • PRI-OCIDE
    For control of microbial growth.