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Old 03-28-2013, 01:05 PM   #1
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Service interval for engine oil, etc

How many owners follow the instructions on oil changes that are posted on the onboard screen? How many, like myself, still change the oil every 3k or some other set mileage? I can appreciate the $ savings following the onboard computer, but I wonder if we are sacrificing engine longjevity to save a few $ shortterm? Sure would appreciate some prompt replies as we are northbound on Monday- THANX in advance for all opinions on this subject- JMHO- DD
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Old 03-28-2013, 01:49 PM   #2
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I don't have an oil life monitor function on my Ram, even though it's an '05. The manual says 7500 miles (I believe for "severe" service), 15000 or once a year otherwise. I change the oil and filter twice a year using Amsoil 15-40 diesel/marine oil and a Wix or NAPA Gold Filter. Overkill? Probably so, but it gives me a warm, fuzzy feeling. The good news, it's "only" a 3 gal. oil change, unlike the Ford or GM diesel. Bad news, Amsoil is kinda pricey, and getting more so.
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Old 03-28-2013, 02:11 PM   #3
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For my gasser, I change the oil every 6 months, or at 25% oil life remaining, which ever comes first. Before a long towing session (in-between those times), I also check the dipstick oil for look and feel, and if I have doubts about the look and feel, I change it anyway. Better safe than sorry, I say.
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Old 03-28-2013, 02:33 PM   #4
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I just sold our Chrysler mini van with 100K miles on it and only replaced the oil when the computer said to...bought it new and never had an engine issue. I also change the oil on my Silverado when the computer says but have very little tow time on it. I'm not sure if the oil change interval varies depending on driving conditions but I may adapt David472s' approach and change the oil at 25%. I can tell when my truck is getting near the oil change interval - it starts to run a little rough.
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Old 03-28-2013, 03:13 PM   #5
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I do not go by the OLM, I use my own schedule. I guess I`m just old school on this but it bugs me if the oil goes longer then I think it should.
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Old 03-28-2013, 03:29 PM   #6
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Every 5000 miles on my Ford 6.7 liter diesel, regardless. Only 3 gal. plus 1 qt. of Rotella 10w 30. Whew!
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Old 03-28-2013, 03:35 PM   #7
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I change 3-5 k and use Mobile 1 85 Mustang SVO 125 K 99 Escort ZX2 165K F250 100k all without engine problems The main reason for the synthentic is due to the heat generated in these engines with cat converters & the extreme close tolerances they are built to. Larry
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Old 03-28-2013, 04:05 PM   #8
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I think the manual for my new F250 specifies every 7000 miles. That doesn't work for me. I'm a 5K mile guy and I've done that on every vehicle I've owned.. I got 24 months free service with my truck, but if Ford doesn't want to pay for the 5K interval change, my dealer does oil and filter service for $12 and I'm happy to pay it.
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Old 03-28-2013, 04:11 PM   #9
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Quote:
Originally Posted by TCNASHVILLE View Post
Every 5000 miles on my Ford 6.7 liter diesel, regardless. Only 3 gal. plus 1 qt. of Rotella 10w 30. Whew!
Wow, that must be a relief. Didn't the 6.0 take something like 15-17 quarts with a filter change?
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Old 03-28-2013, 07:34 PM   #10
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I found an interesting article on GM's oil life monitor and was convinced to use it before I bought my '11. I use 2 1/2 gallons of Mobil Delvac 1300 Super (standard dino oil, not synthetic) and a Mobil One filter. My oil changes are about once a year or approximately 12-14k miles. The samples that I've sent out have come back showing that GM's monitor is conservative with its life expectancy of the oil. I should also mention that in the past I was always a 3k oil change guy.
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