If you drive a 2014-2019 GMC Sierra or Chevy Silverado, you might want to rethink that factory oil recommendation. A truck owner on TikTok says the 0W-20 oil is just the bare minimum for fuel efficiency—not engine health. He swears by 5W-30 for better protection and says it hasn’t hurt his truck at all. Bonus tip: deleting the transmission thermostat and turning off Active Fuel Management could save you from pricey repairs. Would you try these mods or stick to the manual? #Cars #Silverado #TruckLife