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The only way to really find out how an oil benefits your fleet is to test it in your own trucks at their pace. Fleets that have already taken advantage of this risk-free trial have noticed not only increased fuel economy but also much cleaner engines—even after a single oil drain of Guardol FE® 10W30.

The trial includes:

  • Guardol FE 10W-30 for 2 to 10 trucks in your fleet
  • Two oil changes at your standard drain intervals
  • Technical supervision of oil drains with your crew
  • Oil analysis with an independent lab or at your current lab
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