Contact Orscheln Products about fluid level indicators. Orscheln Products, a global leader in motion control systems for heavy-duty vehicle and aircrafts, offers a wide variety of engine and transmission fluid level indicators to customers worldwide. At Orscheln Products, we take pride in our patented, unique Twist2Lock® fluid level indicator design. This fluid level indicator is engineered to allow the user to twist the fluid level indicator, locking it into place. This unique feature is engineered to eliminate loose sticks caused by vibration and is designed to help eliminate oil leakage “blow-by” at the fluid level indicator cap and at the engine block. At Orscheln Products, our fluid level indicators are designed to be purchased as a fully calibrated system. Contact Orscheln Products about solutions for fluid level indicators, as we also offer customizable solutions. Our educated, knowledgeable sales staff is waiting to hear from you to see how Orscheln can help.