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Old 01-10-2014, 03:02 PM   #1
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Default chevy sonic oil change percentage??

I have a 2012 chevy sonic and have creeped close to 9,000 miles on this last oil change. I am currently down to 20% oil life remaining. I wondered what is a normal oil change percentage that the oil should be changed? my oil change soon light comes on about 10% but that just sounds like there'* not much left of the oil properties. book said to wait til light comes on
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Old 01-10-2014, 03:07 PM   #2
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The PCM is programmed with variable tables on how to "judge" when the oil should be changed. It usually uses engine hours, miles, how hot the engine runs and % of time it runs wide open throttle.

As long as you are using the recommended oil, then I see no reason to worry. Unless GM programmed the PCM wrong.
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Old 01-10-2014, 03:11 PM   #3
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cool thank you. usually pretty anal about oil changes. changing from whatever the dealer uses dexos 1 oil. to a full synthetic signature amsoil product. 1 year 25,000 mile oil.
i guess it amazes me how long oil changes intervals are now days
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Old 01-10-2014, 07:56 PM   #4
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I would check with the dealer. I know it use to be if you went over 10,000 miles between oil changes you would void your warranty. But that was when the interval was 3000. Now most are I think 5000.
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Old 01-10-2014, 08:04 PM   #5
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I couldn't find a 2012 manual, but did find a 2013...

Quote:
Engine Oil Change
When the Code 82 DIC message
displays, have the engine oil and
filter changed within the next
1 000 km/600 mi. If driven under the
best conditions, the engine oil life
system might not indicate the need
for vehicle service for more than a year.
The engine oil and filter must
be changed at least once a year
and the oil life system must be
reset. Your trained dealer technician
can perform this work. If the engine
oil life system is reset accidentally,
service the vehicle within 5 000 km/
3,000 mi since the last service.
Reset the oil life system when the
oil is changed. See Engine Oil Life
System on page 10‑11.
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Old 01-10-2014, 08:07 PM   #6
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I know the new vehicles that use the dexos have 5000 mile service intervals. My parents 2014 Silverado does.
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Old 01-10-2014, 08:10 PM   #7
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Old 01-10-2014, 08:13 PM   #8
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Here is another one that says at 7500 miles to check the oil and oil life moniter and change oil if needed. Time For New Oil? - 2012 Chevrolet Sonic Long-Term Road Test
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Old 01-10-2014, 09:34 PM   #9
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Change your oil every 5 to 7 thousand miles. Considering dexos is a synthetic blend mileage is extended. The oil life monitor system is a joke, I have seen vehicles come in with 15 thousand miles on a oil change and still showing 20percent life left. Watch you mileage and you will be fine.
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Old 01-10-2014, 09:59 PM   #10
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Early oil change is ok, but late is worse.
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