Phillips 66 Lubricants announced that it has extended its product quality guarantee to protect heavy-duty fleets against lubricant-related failure in the engine when using Guardol FE 10W-30. The Guardol FE product is warranted for use in 2010 and newer Detroit Diesel engines and 2014 and newer Cummins, PACCAR, Navistar, Volvo/Mack engines. Where to buy Guardol FE 10W-30? This is not a problem anymore. Pacific Petroleum — one of the leading authorised distributors of Phillips 66, provides a wide range of Phillips 66 products. Read more here: https://www.pacificpetroleum.com.au/lower-visco-city-challenge/