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04-14-2019, 01:30 PM #21
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Chris,
Your correct the oil life system does not do oil analysis. But the analysis on every perceivable condition has been performed and used to determine when to change the oil. Using synthetic is fine but not using the factory recommended oil viscosity is a dangerous game. Todays engines have much tighter tolerances where using a higher viscosity oil can result in oil starvation.
JimMidwestCamper
Jim & Dawn
Near Milford, Michigan
2017 Imagine 2600RB
2015 GMC Sierra 1500 Double Cab 4x4
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04-14-2019, 02:30 PM #22
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Jim,
My point was the "oil life" algorithm has NO input for the type of oil used, and therefor can not adjust for different types of oil. I have no idea the algorithm that is used, but it takes many variables into account, but it dose not know the difference in dino and full synthetic oil. I have talked to many people that think their "oil life percentage" or "change oil" indicator will automatically adjust for synthetic oil and give an appropriately long time/miles between oil changes if warranted, and that is incorrect.
I agree. You should always stay with the manufactures recommended grade(s) and weight(s) of oil. In my truck, Ford has multiple recommendations on type (dino, semi-synthetic, and full synthetic) AND weights depending on outside temp and usage. Trailer towing is in the "Severe duty driving" category.
ChrisChris & Karen
Fort Collins, CO
2017 F-350 SRW 6.7 Lariat Value CC LB 4x4
2018 Solitude 310GK - Sold 7/2023
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04-14-2019, 02:54 PM #23
Agreed. The algorithms are very accurate using the operating conditions of the vehicle. I always use the oil life monitors in my vehicles, as equipped, and by having inexpensive analysis done myself, found that even using the monitor, the oil has been capable of running even longer. My main reason for analysis is that it shows other parameters, and can indicate developing conditions, other than oil life, such as contamination...coolant, fuel, levels of wear metals and other factors, that if caught in time, can save a lot of headache and expense. I don't do it every time the oil is changed in my daily driven vehicles, but probably will on my Duramax since I only use it to tow and will probably only change the oil/filters once a year or so, or maybe not. I haven't had an analysis done on it yet as it was just serviced when I got it. I've had it a year now and oil life is at 78% after just over 3K miles. 99% of the time that it even gets started, it is run, under towing load for at least 50 miles and usually more, as you said, best case. Those that daily drive their tow vehicles should not have any concern over using the oil life monitors for servicing but oil analysis every few oil changes is a good idea and can provide a lot of good information, in my opinion.
Also, not to try to recommend oil type, but I have always used Mobil 1 syn in the appropriate viscosity in my previous vehicles, all gas, but will stick with Rotella T4, regular dino oil, which the previous owner used, going by the dash monitor, since new. And, to address the question of the original poster, I do not feel that additional filtration is needed if following the correct maintenance schedule and OEM or equivalent quality filters. The addition of devices to the oiling system create unnecessary complication and potential failure points. Not really worth it, again, in my opinion. YMMV2018 Reflection 303RLS
2006 Chev 2500HD Duramax CC/SB/4X4
Superglide2700 Bakflip F1
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04-14-2019, 02:56 PM #24
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Chris,
The model will take this into account since manufactures will not increase the service life in using a synthetic oil versus a non-synthetic oil. A synthetic oil will not prevent contamination from carbon and condensation from forming so the change interval is the same. I'm more familiar with the GM model which takes all conditions and drive scenario's into account.
Folks can do whatever they wish where I'm letting you know todays oil life monitors do far more than keeping track of a set mileage between oil change intervals. If your driving in a desert condition or at -40 in Alaska (would require a different viscosity in this case) the model takes all this into account. I have no issue with relying on my oil life monitor under all conditions.
https://www.gmc.com/gmc-life/technol...itor-tells-you
JimLast edited by MidwestCamper; 04-14-2019 at 06:14 PM.
MidwestCamper
Jim & Dawn
Near Milford, Michigan
2017 Imagine 2600RB
2015 GMC Sierra 1500 Double Cab 4x4
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04-14-2019, 07:24 PM #25
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A bypass secondary oil filter does a better job on gasoline engines, and it allows you to go very long miles between oil changes. Just change the filters, top off the oil and keep on driving. I would from time to time get an oil analysis, however.
But a diesel engine is a different animal in that its oil gets fuel dialated into the oil. You can actually was your hands in old diesel oil. I change my diesel oil every 5,000 miles and it does great. No reason to do any different.
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04-14-2019, 08:08 PM #26
Fuel dilution of the oil is just as big (or bigger) a problem for gasoline engines. This is not something that any particulate filter can remedy. I would also recommend using OEM spec oil and following the oil life monitor. A huge amount of research has gone into figuring this out.
RobCate & Rob
2015 Reflection 303RLS
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04-14-2019, 09:34 PM #27
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The guy next to us in the park here in New Mexico until last week had a bypass oil filter on his truck. Said that the dealers and many other oil change places won't touch the truck because the oil system has been modified. He has to call around to find an independent shop that will change the oil and filters or do it himself.
RobU.S. Army Retired
2012 F350 DRW CC LB Lariat PS 6.7
2020 Solitude 310GK-R, MORryde IS, disc brakes,
Sailun LRG tires, solar, DP windows, W/D
(Previously in a Reflection 337RLS)
Full time since 08/2015
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04-15-2019, 04:38 AM #28
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Bamanam,
Many of todays engines use a variable displacement oil pump. What this means is at lighter loads and RPM, the oil pump does not pump as much volume and at lower pressures. This system was designed for increased fuel economy. When you use a by pass oil filter, you are taking away a certain percentage that you can no longer spare with this type of system. And since all engines that burn fossil fuel (not near as much for CNG, LP or zero with H) will dilute with some level of fuel, water, carbon, chemicals etc.. Its best to use the monitor and to change the oil.
JimLast edited by MidwestCamper; 04-15-2019 at 04:44 AM.
MidwestCamper
Jim & Dawn
Near Milford, Michigan
2017 Imagine 2600RB
2015 GMC Sierra 1500 Double Cab 4x4
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04-15-2019, 12:33 PM #29
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Thanks Chris. I was doing general-use car-like driving on that non-synthetic oil, but I live in the country so not a *lot* of stop-and-go city traffic; mostly 50mph-65mph. It's what the truck does most - of the ~50K miles it has traveled well under 15K have been towing - and I haven't again experienced noticeably short oil life. Just that one time after using good-quality non-synthetic oil.
Mark - 2018 Solitude 310GK - 2017 F-350 diesel SRW short box - Pullrite Superglide hitch
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04-15-2019, 04:56 PM #30
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Boyscout,
Here is a brief description in how your Fords oil life monitor calculates change intervals.
https://www.yourmechanic.com/article...rent-minderler
https://owner.ford.com/how-tos/vehic...e-monitor.html
JimLast edited by MidwestCamper; 04-15-2019 at 05:02 PM.
MidwestCamper
Jim & Dawn
Near Milford, Michigan
2017 Imagine 2600RB
2015 GMC Sierra 1500 Double Cab 4x4
Reflection swivel table question
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