See also:

Materials Added To Engine Oil
Do not add any supplemental materials, other than leak detection dyes, to the engine oil. Engine oil is an engineered product and its performance may be impaired by supplemental additives. ...

Numeric Keypad Menu
Numeric Keypad Menu When the display for either Channel 1 or Channel 2 shows DIRECT TUNE, pressing the remote control’s ENTER button activates a numeric keypad menu. This screen makes it ea ...

Synthetic Engine Oils
You may use synthetic engine oils provided the recommended oil quality requirements are met, and the recommended maintenance intervals for oil and filter changes are followed. ...