The Mechanic Thane | Expert Car Service in Thane on Instagram: "Using a diesel additive the right way can actually improve your engine’s health, reduce black smoke, and boost mileage. But most people still don’t know how to use it correctly. In this reel, our expert explains the right way to use a diesel additive so your engine runs cleaner, smoother, and more efficient. If you drive a diesel car, this reel is a must-watch. Want more auto care tips? Follow @themechaniic.thane for expert guidance