See also:

What to Use
To determine what kind of fluid to use, see Recommended Fluids and Lubricants. Always use the proper fluid. ...

Making a Call
To make a call: 1. Press once or twice, depending on the radio. 2. Enter the character sequence. See “Entering a Character Sequence” in Operation  for more information. 3. Select Call ...

Consistency of Readings
Always check the fluid level at least twice using the procedure described previously. Consistency (repeatable readings) is important to maintaining proper fluid level. If inconsistent readings per ...