TAT Express Inc. on Instagram: "Ever wonder what that small tube on your Volvo D13 or Mack MP8 is actually doing? That’s the Venturi Tube — the part responsible for measuring EGR flow using a pressure drop so the ECM knows exactly how much exhaust gas is being recirculated. When it clogs or leaks, you get bad readings, poor performance, and derates.Raw clip explains it all.TAT Express4140 Langdon Rd, Dallas TX 75241972-225-3017Google link: https://maps.app.goo.gl/KzW9PgYB8Vr7Vw8x7?g_st=ipcFull v

TAT Express Inc. on Instagram: "During inspection on this Mack MP8 engine, our specialist tech found a coolant leak coming from the coolant reservoir. The reservoir plays a critical role in maintaining proper coolant level and system pressure, and any leak here can quickly affect engine temperature control.💡 Why a leaking coolant reservoir matters:The coolant reservoir allows the cooling system to expand and contract while maintaining the correct fluid level. When it leaks, coolant is lost and