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I changed my oil yesterday. I punched the filter to let it drain. After a while I felt like it was time to remove it… and a ton of oil still came out..
A good amount of oil comes out of that big ole filter. I have found with enough time, like waiting till the oil almost completely stops coming out of the filter, it is pretty much mess free. Just an occasional drip from the housing.
I have always changed the oil based on the manufacturer's mileage or the OLM. I've never done the first oil change earlier than recommended. I've never used synthetic unless required by the manufacturer. I typically keep vehicles for 8 to 9 years with 100,000 miles or more. Never had an engine issue.
You won't hurt the engine by changing the oil early nor will you make a meaningful improvement on engine life.
One thing I wouldn't do is change the filter only.
Same here, change it when it tells me to. Then again, I don't do city driving, majority highway, which makes a HUGE difference in oil life. YMMV
Originally Posted by 2021F350
I guess what I am really asking is, do you guys trust the oil-life remaining info and do you go by it... ???
Yes. It is use based, Time based, and also considers how hard the engine has been worked. I have watched it change based on if I was towing or not. It knows when the engine has been worked and will adjust the percentage down based on how hard and how many miles it was worked. I have seen it drop 10% after a 800 mile trip. Coupled with Blackstone reports, I trust it.
odd, they recommend going by the olm in the manual.
And the manual should be used, that is the simple answer for most folks. For those wishing to go the extra mile, learn more about oil, ICE, their vehicle, and maybe their unique usage or application, I would suggest performing a UOA, study the report, and trend that data how you best see fit.
Just because the OLM goes to zero at 12 months does not mean it is not smart. Time since the last oil change is just one of the parameters that affect oil life.
And just because your oil has 12 months on it does not mean it has to be changed. If wear metals are below limits, additives are still plentiful, viscosity is still in range, fuel, antifreeze, water, and insolubles are are below recommended percentages, the TAN is acceptable, and the TBN is still strong, why must the oil be changes at 12 months? Unfortunately the OLM on our vehicles cannot take all of this in consideration, so the manual and OLM will dictate a change every 12 months.
Antioxidants in the oil break down over time. At about a year, yes, you should change your oil. The oil experts all agree, as well as the manufacturer of every vehicle I’ve owned. I just happened to watch this last week. It probably isn’t the best video about antioxidants but it does cover quite a bit of info. He touches on antioxidants at 5:10.
And just because your oil has 12 months on it does not mean it has to be changed. If wear metals are below limits, additives are still plentiful, viscosity is still in range, fuel, antifreeze, water, and insolubles are are below recommended percentages, the TAN is acceptable, and the TBN is still strong, why must the oil be changes at 12 months? Unfortunately the OLM on our vehicles cannot take all of this in consideration, so the manual and OLM will dictate a change every 12 months.
No argument with what you wrote. Oil analysis is a much more accurate method of determining oil life. But that's not practical for most owners. Manufacturers recommend oil change intervals based on testing under different conditions. They are not perfect and likely err on the side of recommending oil changes before the oil itself is compromised.
I was commenting on the premise that OLMs are not smart simply because they require an oil change at 12 months regardless of mileage. Time since the last oil change is part of every manufacturer's oil change recommendations. The OLM is not smart in terms of oil analysis but it is smart in terms of monitoring engine operation data, correlating it to normal, severe and extreme operating conditions and adjusting the oil change interval accordingly.
Seems that an oil life monitor is more intended to be predictive for oil life than it is for filter life.
If there is concern about filter plugging with engine manufacture debris, then changing it much earlier would seem to be a more reasonable strategy. Worries about the filter plugging, if they exist, would be in the first thousand miles, and not in the last.
Antioxidants in the oil break down over time. At about a year, yes, you should change your oil. The oil experts all agree, as well as the manufacturer of every vehicle I’ve owned....
It depends. Additives are degraded and decompose over time due to operating conditions. It's the operating conditions, not the time. Blanket statements fail to take that into account. Does oil in the bottle go bad in a year? No, it does not. Although oil does have a shelf life, it is years. As others on this thread had pointed out, answers come from data. If one wants to know, get the oil analyzed. Answers come from data. It works that way anywhere in the world. Data. And I know this will drive some to insanity, but my last oil analysis, Blackstone said to run my oil changes out to two years, instead of annually, for my lightly used truck. My soot, insoluables, water, and fuel contamination were zero to well below averages. My additives were at nearly new levels. This is in a lightly used, city driven truck that doesn't tow or haul.
Seems that an oil life monitor is more intended to be predictive for oil life than it is for filter life.
If there is concern about filter plugging with engine manufacture debris, then changing it much earlier would seem to be a more reasonable strategy. Worries about the filter plugging, if they exist, would be in the first thousand miles, and not in the last.
I can not find cases of plugged filters on new trucks... The false premise is that, your filter could be plugged early on due to debris in the engine. If this is the case, your engine has failed. Normal manufacturing debris is not nearly enough to plug a decent oil filter.
Personally I think alot of people way overthink these types things. Just change the oil if it makes you feel better and drive the truck. To the crowd that thinks there's enough break-in debris to be concerned about, the Manufacturing and machining processes and tolerances in the last 20yrs are so much tighter and refined than days past. It's nothing the filter can't handle. Here is a pic of of one of my new trucks filter I cut open for grins. 2022 F450 4k mi. Driven 600 miles before towing 18-28k lb trailer nearly continually.
Every pleat looks as clean as this. Honestly I expected more.
I'm a 5k mi OCI guy on pickups. Mostly for ease of tracking, I'd probably run much further on synthetic oil if it weren't for fuel dilution due to this platform running a post- latent injection regen process versus a "dosing/9th injector".
