One-Tool OTO350 User Manual

ENGINE OIL ANALYZER OTO350
USER'S MANUAL

INSTRUMENT DESCRIPTION

BUTTONS DESCRIPTION

Power button
• When the instrument is OFF, to turn it ON press
and hold the Power button until the unit turns on
(in approximately 5 seconds).
• When the instrument is ON, to turn it OFF press
and hold the Power button until the display turns
off (in approximately 5 seconds).
• Carry out current operation.
• The 'Auto Power Off' feature will automatically turn
the instrument off after 5 minutes of no button
being pressed.
Up button
Down button
Back button
Next button

OPERATING INSTRUCTION

1. Turn the instrument on.
2. Select the oil mode by pressing the Up and Down button,
and then press the Power/Next button as shown in Fig.1.
3. Put 3-5 drops of oil to the bowl of the instrument.
4. Press the Power button. The result will be shown on the
display in approximately 15 seconds as shown in Fig.2.
Main Menu
GAS1 DSL1
GAS2 DSL2
Fig.1
Important
• Do not drop oil on the sensor before turning on the
unit. Make sure that the sensor and the inner surface
of the bowl are clean and dry.
• Do not test hot oil. For best results, the temperature of
the oil sample to be tested should be close to the
temperature of the instrument, and both should be
between 10 -27
• Place the instrument on a flat surface when testing.
•
Put 3-5 drops of oil on the sensor until the oil surface
reaches the required height which is indicated in Fig.3

EXPLANATION FOR TEST RESULTS

Test Result Explanation
0-20% New Oil / Oil newly changed
20%-60% Excellent / good oil quality
60%-80% Fair oil quality
80-90% Recommend oil change
Recommend
90%
change / Recommend engine check

HOW DOES THE INSTRUMENT WORK?

The tester primarily reacts to the increase in acidity of oil.
As the oil degrades, it becomes more acidic and will begin
to pit mental engine parts. The result
that the level of acid in the oil has reached a maximum
acceptable level, and the oil should be changed. However,
other contaminants (such as dirt, soot, water, antifreeze
and metal particles) also influence the reading. Water or
antifreeze in the oil may indicate a bad seal or head gasket.
Metal particles result from unusual water of bearings,
pistons, rings, etc. Excessive carbon or soot may be
caused by poor compression and excessive blow-by. Fuel
leaking can dilute the oil and may cause an artificially good
Drop test oil /
Testing...
Pollution 78%
Test done!
Fig.2
Fig.3
immediate oil
90% usually means