Lexus GS 450h 2008 Owner's Manual page 427

Engine oil consumption
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The amount of engine oil consumed depends on the oil viscosity, the quality of
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the oil and the way the vehicle is driven.
More oil is consumed under driving conditions such as high speeds, frequent
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acceleration and deceleration.
A new engine consumes more oil.
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When judging the amount of oil consumption, keep in mind that the oil may
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have become diluted, making it difficult to judge the true level accurately.
Oil consumption: Max. 1.1 qt./600 miles, 0. 9 lmp.qt./600 miles (1.0 L per 1000
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km). If the vehicle consumes more than this amount, contact your Lexus dealer.
Resetting the engine oil maintenance data (U.S.A. only)
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Perform the following steps:
Press the "DISP" switch (→P. 156) to change the multi-information dis-
STEP 1
play to blank.
Turn the "POWER" switch to OFF.
STEP 2
Turn the "POWER" switch to ON mode with the trip meter reset button
STEP 3
held down.
Keep pressing the button for longer than 7 seconds after the "POWER"
STEP 4
switch is in ON mode.
4-3. Do-it-yourself maintenance
After the above operation, the message
shown in the left will appear on the display.
The master warning light and tone will turn
on. After 5 seconds, the system reset is com-
pleted.
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