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Old 07-10-2016, 05:34 PM   #1
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Changing oil annually irrespective of miles accumulated is wasteful & irresponsible

Big Oil says motor oil shelf life is 5 years--google shelf life for motor oil and you'll find that Big Oil says that motor oil shelf life is at least 5 years. Given that Big Oil is saying this you know its probably much longer than that given their lack of credibility to begin with. So, I think its safe to say that you could go significantly longer than one year on low mileage oil changes. Caterpillar says 15,000 miles is the factory recommended distance between oil changes on my C-10 diesel engine. Thus I change its oil every two years or 10,000 miles which ever comes first. To change 34 quarts of oil annually just because 12 months have gone by, irrespecutful of miles accumulated, is wasteful and frankly, irresponsible.
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Old 07-10-2016, 05:41 PM   #2
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I guess it's up to each individual to make the decision depending on their level of comfort.
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Old 07-10-2016, 05:42 PM   #3
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This may be true , however I'm reminded of an old Fram Oil Filter Commercial. Pay me now or pay me later . I only took 7 quarts so it was a no brainier for me. I usually did it twice a year because oh the mileage I did.
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Old 07-10-2016, 05:46 PM   #4
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The only problem is when you run an engine there are blow by gasses and moisture build up that can contaminate your oil. Without running your engine for an extended period of time to heat the oil sufficiently the acids and moisture build up and cause more problems by attacking the bearings, cylinders, and other components.
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Old 07-10-2016, 05:54 PM   #5
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The 5 year shelf life of oil, is in a sealed container, not a crankcase subjected to combustion gas's, fuel dilution and condensation due to atmospheric changes.

I suppose if it's out of warrantee, you'll be fine.
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Old 07-10-2016, 05:56 PM   #6
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The dumbing down continues.
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Old 07-10-2016, 06:02 PM   #7
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yup, 34 quarts of oil ARE expensive . . . . Just out of curiosity, how much does an engine rebuild cost for your rig??? . . . .

I guess I'm just one of the irresponsible ones! I change mine every 12 months, give or take a month or so just to be on the safe side.
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Old 07-10-2016, 06:51 PM   #8
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That's a lot of oil. I would have an analysis done and then you will know for sure.
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Old 07-10-2016, 06:53 PM   #9
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Quote:
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The only problem is when you run an engine there are blow by gasses and moisture build up that can contaminate your oil. Without running your engine for an extended period of time to heat the oil sufficiently the acids and moisture build up and cause more problems by attacking the bearings, cylinders, and other components.
Agreed, I think i will change it.
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Old 07-10-2016, 07:04 PM   #10
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8.5 gallons, must be a BIG oil pan.
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Old 07-10-2016, 07:19 PM   #11
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That's a lot of oil. I would have an analysis done and then you will know for sure.

I Agee! That would prove it either way!
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Old 07-10-2016, 07:26 PM   #12
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Seems an oil analysis is the right way to make the determination of oil condition.
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Old 07-10-2016, 07:29 PM   #13
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Changing oil annually irrespective of miles accumulated is wasteful & irrespo...

I agree, annual analysis of engine and transmission fluids is what I am doing. Skipping this year since both were changed but will check it next spring. Great information is provided on the health of the engine and transmission.
This is on a Cummins and Allison trans.
Not sure how it applies on the gas engines and transmission.


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Old 07-10-2016, 07:29 PM   #14
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8.5 gallons, must be a BIG oil pan.
I remember changing oil in the semis I used to drive. They took 11 gallons!
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