Originally Posted By: ToadU
I will counter with fleets like my wrecker fleet. Nothing gets changed early. We run everything to specs for the duty cycles we put on the trucks per owners manual. (and cars for my salespeople). Having owned a shop as well and having at various times been the low bidder to maintain both police, city vehicles and county school busses I can tell you every fluid was run as per manufacturer and zero early changes of FF or ANY fluid ever occurred. Oils and filters and other items were the absolute cheapest I could buy in bulk that met the required specs. ($1.50 oil filters for police cars) I never cheated and always provided what the manual and my bid said I would. I certainly didn't provide more and never bought what you would consider brand names. Overall fleet wide with all different types of motors--gas and diesel--manufacturers and even a lot of hydrualic equipment (my wreckers) the fleets have all been extremely reliable overall.
Everyone of my wreckers gets all the AC vents broken within 4 months by the drivers, knobs ripped off stereos and seats ripped Ect. Think how these guys are driving my trucks. Spinning the duals on a F550. They shift from drive to reverse to drive without a full stop. (95 percent of our towing is tresspass towing so it's go go go fast fast fast). We drive over curbs at high speeds.
I am extremely confident big fleets nationwide never get anything other than minimal intervals, never early FF changes and the cheapest fluids and filters meeting minimum spec. That's IF the fleets are well maintained. A lot of fleets fall below this minimun level. Overall fleet vehciles are the most reliable, hardest run, beat on and rack up huge huge huge mileages throughout their service life. Ever seen the odometer on a police car, city bus or taxi cab?? Luminas and Crown Vic's with 400k original motors are not a rarity. Most of thr times the drivers don't care about the vehicle and dog it and most fleets idle constantly and do short stop and go driving. That's thr hardest type of driving yet we are seeing huge odometer numbers with very good realiability overall.
I don't think anyone can prove early FF changes, more aggressive maintenance and boutique and high dollar filters and fluids do anything to extend the life of the vehicle. We do have plenty of evidence proving the factory spec'd intervals and fluids work very well. We have some evidence to at least indicate the possibility over maintenace can cause harm. Dirty filters are more effective that new ones....harsh additive packages never being run out Ect.... We do know people performing overly aggressive maint waste money. We do know it's not good for the environment.
UOAs back this up. Oil is oil if it meets spec. Dino can be very robust. Even the lest conservative maint intervals per manuals are extremely conservative.
I will counter this perspective with the mere fact that bypass filter manufacturers exist. This response is obviously in reference to fleets; what is not good for the environment is factory OCI. Bypass filtration greatly extends OCI; One million miles between overhauls is no longer rare in the trucking industry. I didn't make this statement up:
http://www.machinerylubrication.com/Read/681/oil-filter Try telling these guys to disonnect their bypass filtration systems:
http://marineoiltechnology.com/applications/ http://www.gulfcoastfilters.com/Testimonials.htm
50,000 hour Diesel engine off-highway industrial rebuilds are possible:
http://bakkenoilbiz.com/trucking/50000-hour-off-highway-diesel-engine-rebuilds-they-are-possible/
You can google Hare Trucking; Mr. Hare ran a fleet of 100 trucks for one million miles EACH TRUCK without a single oil change.
http://www.marketwired.com/press-release...ange-793914.htm Try telling Mr. Ross Hare that his overly aggressive maintenance is a waste of money.
https://www.puradyn.com/5-6-testimonials-2/
Here are a few well known manufacturers of bypass systems; and BITOG has a forum for bypass filtration. Many of the below manufacturers are discussed on BITOG under the bypass forum:
https://allsynoil.com/Amsoil-By-Pass-Oil-Filter-Systems.html
http://www.kleenoilusa.com/
http://www.frantzfilters.com/
http://www.gulfcoastfilters.com/index.htm
http://www.ecomicrofilters.com/
http://www.fs2500.com/
https://www.puradyn.com/
http://www.ntz-filter.com/index.php?id=11
http://stauffusa.com/customer/stcorp/catalog/Catalog_PDFs/Filtration/Filter_BPLS.pdf
http://www.generation2filtration.com/
http://www.perfectfiltration.com/page.php?app_id=19
http://cleanoilpower.com/system/
To Mr. ToadU: You never stated the size of your fleet or the number of diesels you run, but I would think if it is anything substantial, you should thank me for my input, not ridicule or name call me, and I wouldn't mind discussing this with you over an adult beverage or two. The most effective filtration you can possibly have is a centrifuge combined with bypass filtration:
http://www.machinerylubrication.com/Read/29426/purifying-engine-oil It has been stated on this forum that no matter how effective the filtration is, the additives still deplete and the oil will eventually need changing....Really? Read this:
https://www.puradyn.com/filter-elements/ Puradyn has 5 US patents; one of them is for timed-released additives to maintain your TBN. IF you were to run Puradyn filters WITH a centrifuge, could YOU go a million miles without an oil change or 50,000 hours without a rebuild? Hmmmmmm?
To the OP: This is a little off topic, but if I had a new vehicle, bypass filtration would definitely be installed. I am running an NTZ bypass filter, which is 99.97% effective at 2 microns.
http://www.ntzfilter.com/popup/slide26.asp