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  <url><loc>https://dieselenginespec.com/</loc><priority>1.0</priority><changefreq>weekly</changefreq></url>
  
  <!-- Pillar 3: Valve Lash & Overhead (Hero Whitespace) -->
  <url><loc>https://dieselenginespec.com/valve-lash/</loc><priority>0.9</priority><changefreq>monthly</changefreq></url>
  <url><loc>https://dieselenginespec.com/cummins-isx-valve-lash/</loc><priority>0.9</priority><changefreq>monthly</changefreq></url>
  <url><loc>https://dieselenginespec.com/cummins-isx15-valve-lash/</loc><priority>0.8</priority><changefreq>monthly</changefreq></url>
  <url><loc>https://dieselenginespec.com/detroit-dd15-valve-lash/</loc><priority>0.9</priority><changefreq>monthly</changefreq></url>
  <url><loc>https://dieselenginespec.com/cat-c15-valve-lash/</loc><priority>0.9</priority><changefreq>monthly</changefreq></url>
  <url><loc>https://dieselenginespec.com/paccar-mx13-valve-lash/</loc><priority>0.9</priority><changefreq>monthly</changefreq></url>
  <url><loc>https://dieselenginespec.com/detroit-dd13-valve-lash/</loc><priority>0.8</priority><changefreq>monthly</changefreq></url>
  <url><loc>https://dieselenginespec.com/cat-3406e-valve-lash/</loc><priority>0.8</priority><changefreq>monthly</changefreq></url>
  <url><loc>https://dieselenginespec.com/detroit-dd16-valve-lash/</loc><priority>0.8</priority><changefreq>monthly</changefreq></url>
  <url><loc>https://dieselenginespec.com/diesel-injector-preload-spec/</loc><priority>0.8</priority><changefreq>monthly</changefreq></url>

  <!-- Pillar 1: Oil & Coolant Capacities -->
  <url><loc>https://dieselenginespec.com/oil-capacity/</loc><priority>0.9</priority><changefreq>monthly</changefreq></url>
  <url><loc>https://dieselenginespec.com/cummins-isx15-oil-capacity/</loc><priority>0.9</priority><changefreq>monthly</changefreq></url>
  <url><loc>https://dieselenginespec.com/detroit-dd15-oil-capacity/</loc><priority>0.9</priority><changefreq>monthly</changefreq></url>
  <url><loc>https://dieselenginespec.com/cat-c15-oil-capacity/</loc><priority>0.9</priority><changefreq>monthly</changefreq></url>
  <url><loc>https://dieselenginespec.com/paccar-mx13-oil-capacity/</loc><priority>0.8</priority><changefreq>monthly</changefreq></url>
  <url><loc>https://dieselenginespec.com/detroit-dd13-oil-capacity/</loc><priority>0.8</priority><changefreq>monthly</changefreq></url>
  <url><loc>https://dieselenginespec.com/cat-3406e-oil-capacity/</loc><priority>0.8</priority><changefreq>monthly</changefreq></url>
  <url><loc>https://dieselenginespec.com/detroit-dd16-oil-capacity/</loc><priority>0.8</priority><changefreq>monthly</changefreq></url>
  <url><loc>https://dieselenginespec.com/diesel-engine-coolant-capacity/</loc><priority>0.8</priority><changefreq>monthly</changefreq></url>
  <url><loc>https://dieselenginespec.com/diesel-oil-capacity-comparison-chart/</loc><priority>0.8</priority><changefreq>monthly</changefreq></url>
  <url><loc>https://dieselenginespec.com/diesel-oil-capacity-calculator/</loc><priority>0.8</priority><changefreq>monthly</changefreq></url>

  <!-- Pillar 4: Head Bolt Torque -->
  <url><loc>https://dieselenginespec.com/head-bolt-torque/</loc><priority>0.9</priority><changefreq>monthly</changefreq></url>
  <url><loc>https://dieselenginespec.com/cummins-isx-head-bolt-torque/</loc><priority>0.9</priority><changefreq>monthly</changefreq></url>
  <url><loc>https://dieselenginespec.com/cummins-isx15-head-torque/</loc><priority>0.8</priority><changefreq>monthly</changefreq></url>
  <url><loc>https://dieselenginespec.com/detroit-dd15-head-torque/</loc><priority>0.9</priority><changefreq>monthly</changefreq></url>
  <url><loc>https://dieselenginespec.com/cat-c15-head-bolt-torque/</loc><priority>0.9</priority><changefreq>monthly</changefreq></url>
  <url><loc>https://dieselenginespec.com/cat-c15-head-torque/</loc><priority>0.8</priority><changefreq>monthly</changefreq></url>
  <url><loc>https://dieselenginespec.com/paccar-mx13-head-torque/</loc><priority>0.8</priority><changefreq>monthly</changefreq></url>
  <url><loc>https://dieselenginespec.com/detroit-dd13-head-torque/</loc><priority>0.8</priority><changefreq>monthly</changefreq></url>
  <url><loc>https://dieselenginespec.com/cat-3406e-head-bolt-torque/</loc><priority>0.8</priority><changefreq>monthly</changefreq></url>
  <url><loc>https://dieselenginespec.com/cat-3406e-head-torque/</loc><priority>0.8</priority><changefreq>monthly</changefreq></url>
  <url><loc>https://dieselenginespec.com/detroit-dd16-head-torque/</loc><priority>0.8</priority><changefreq>monthly</changefreq></url>
  <url><loc>https://dieselenginespec.com/diesel-head-torque-angle-calculator/</loc><priority>0.8</priority><changefreq>monthly</changefreq></url>

  <!-- Pillar 2: SPN Diagnostic Codes -->
  <url><loc>https://dieselenginespec.com/fault-codes/</loc><priority>0.9</priority><changefreq>monthly</changefreq></url>
  <url><loc>https://dieselenginespec.com/spn-fmi-fault-code-lookup/</loc><priority>0.9</priority><changefreq>monthly</changefreq></url>
  <url><loc>https://dieselenginespec.com/spn-3251-fmi-2/</loc><priority>0.8</priority><changefreq>monthly</changefreq></url>
  <url><loc>https://dieselenginespec.com/spn-641-fmi-9/</loc><priority>0.8</priority><changefreq>monthly</changefreq></url>
  <url><loc>https://dieselenginespec.com/spn-100-fmi-4/</loc><priority>0.8</priority><changefreq>monthly</changefreq></url>
  <url><loc>https://dieselenginespec.com/spn-84-fmi-14/</loc><priority>0.8</priority><changefreq>monthly</changefreq></url>
  <url><loc>https://dieselenginespec.com/spn-107-fmi-3/</loc><priority>0.8</priority><changefreq>monthly</changefreq></url>
  <url><loc>https://dieselenginespec.com/spn-3360-fmi-7/</loc><priority>0.8</priority><changefreq>monthly</changefreq></url>
  <url><loc>https://dieselenginespec.com/spn-111-fmi-3/</loc><priority>0.8</priority><changefreq>monthly</changefreq></url>
  <url><loc>https://dieselenginespec.com/spn-105-fmi-3/</loc><priority>0.8</priority><changefreq>monthly</changefreq></url>
  <url><loc>https://dieselenginespec.com/j1939-datalink-sensor-diagram/</loc><priority>0.8</priority><changefreq>monthly</changefreq></url>

  <!-- Pillar 5: Fuel & DEF -->
  <url><loc>https://dieselenginespec.com/fuel-def/</loc><priority>0.9</priority><changefreq>monthly</changefreq></url>
  <url><loc>https://dieselenginespec.com/diesel-fuel-consumption-calculator/</loc><priority>0.8</priority><changefreq>monthly</changefreq></url>
  <url><loc>https://dieselenginespec.com/def-consumption-calculator/</loc><priority>0.8</priority><changefreq>monthly</changefreq></url>
  <url><loc>https://dieselenginespec.com/diesel-brake-specific-fuel-consumption/</loc><priority>0.8</priority><changefreq>monthly</changefreq></url>

  <!-- E-E-A-T Legal Suite -->
  <url><loc>https://dieselenginespec.com/about-us/</loc><priority>0.5</priority><changefreq>yearly</changefreq></url>
  <url><loc>https://dieselenginespec.com/methodology/</loc><priority>0.7</priority><changefreq>yearly</changefreq></url>
  <url><loc>https://dieselenginespec.com/privacy-policy/</loc><priority>0.3</priority><changefreq>yearly</changefreq></url>
  <url><loc>https://dieselenginespec.com/terms-and-conditions/</loc><priority>0.3</priority><changefreq>yearly</changefreq></url>
  <url><loc>https://dieselenginespec.com/disclaimer/</loc><priority>0.3</priority><changefreq>yearly</changefreq></url>
  <url><loc>https://dieselenginespec.com/contact-us/</loc><priority>0.5</priority><changefreq>yearly</changefreq></url>
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