Doc’s Diesel oil filter

Yeah...but good luck with that in a real-world scenario. I can vouch for what I've seen us do...these guys look like a fly-by night operation selling cheap stuff out of Asia. Just my opinion though.

I mean what are you really saving by using them over a genuine product? Seems like a high risk, low reward situation.
I'm like Fox News....I report, you decide.
 
I generally run Wix, mostly because it's what the local place generaly stocks. My fleet is everything from CAT, Hitachi, Bobcat, Kubota, Ford, Dodge, etc, etc.
 
Go to Geno’s Garage for your filters. All orders submitted by 3:00 pm EST ship the same day. Yes you have to pay shipping but most of the time they are cheaper than Amazon and you definitely will not get a knockoff or rebranded junk. Very nice people to do business with.
 
Go to Geno’s Garage for your filters. All orders submitted by 3:00 pm EST ship the same day. Yes you have to pay shipping but most of the time they are cheaper than Amazon and you definitely will not get a knockoff or rebranded junk. Very nice people to do business with.
I shopped there years ago when Geno would take the orders.
 
If you would rather buy your filters in person and not on the internet, the Mopar MO-285 can be obtained at just about any parts store or at Walmart. It is the same exact filter as the FleetGaurd LF3972. It’s filtering efficiency is not quite as good as the lf16035 but there are literally hundreds of thousands of Cummins engines that have never used anything else and are still running.
Geno’s had the LF 3972 filters for $8.95 when I ordered mine a week or so ago and that is a deal.
 
A search reveals Doc's filters come from China.

Good advice to be cautious buying filters on-line as lots of counterfeit parts of name brands are selling in these venues. Also seller liquidating new old parts.
 
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Anybody ever cut one apart I did and there's no rubber seal between where it screws on and all the little holes so the filtration isn't actually all going through the element it can leak by right underneath where it threads on
 
Anybody ever cut one apart I did and there's no rubber seal between where it screws on and all the little holes so the filtration isn't actually all going through the element it can leak by right underneath where it threads on
Not sure what you're describing. You saying it didn't have an anti-drain back valve?
 
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I know on the Gladiator forums and the EcoDiesel they use, Doc's Diesel kind of got a larger following during COVID supply chain issues that plagued the OEM MOPAR filters being out of stock to the point that dealerships were turning away doing oil changes. For many, Doc's Diesel was the only game to get the EcoDiesel Filter. Same with the fuel filters also.
 
The Doc’s Diesel D5335 for the 6.7L Cummins looks very similar to a standard cellulose Premium Guard PG5335 “Engineered to deliver up to 5,000 miles of engine protection; 96% Multi-Pass efficiency and removal of particles as small as 20 microns”. For about $20-22 you can do much better.

You would be doing you truck a favor just using a Mopar MO-285/Fleetguard LF3972. If you shell out roughly $8-9k for the engine package, you can source a reasonable priced quality oil filter IMO.

 
No seal to seal between the out side of the filter element to the in side of the element
That's because the filter doesn't have an anti-drain back valve (ADBV). If it had an ADBV, then that would become the seal. Yes, the filter on the left without any kind of seal there (ie, a separate ring seal or an ADBV) will leak some dirty oil at that point.
 
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