OLEJOE
Well-Known Member
They’ve been working for quite some time. I think Cummins knows what they need.
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What oil for 2020 cummins? - Merged oil threads
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They seem to work quite well, but the fact is that the Cummins published flow rate for the oil pump exceeds the Fleetguard published flow rate for the oil filters.
H3LZSN1P3R
You're doing it wrong
In the past that would be a true statement but these days manufactures knowing their products seems to be less and less they just slap things together without doing the research not necessarily Cummins, but it’s a common theme among many manufacturers these days
OLEJOE
Well-Known Member
The engine oiling system can’t flow the amount of oil the pump is rated for. If it could it would have 0 oil pressure. The oil pump goes into bypass when it reaches the pressure limit of the bypass and dumps the excess back to the oil pan. The filter is the least restrictive part of the whole system.
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Correct, but the disparity is pretty impressive. The pump is rated for 20.5 GPM at 4200 rpms (2800 engine rpms), while the Fleetguard filters are rated for 8.72 GPM.
At cruise rpms the oil bypass isn't open, so 100% of the oil flows thru the filter. At higher rpms the bypass does have the potential to be open depending on oil temp.
It's just another reason I am a fan of the DBL7349 since it not only filters better, but it's rated for 20 GPM.
OLEJOE
Well-Known Member
I can’t find the actual inside diameter of the outlet stub that the filter screws on to, but I don’t think it’s capable of flowing 20 gpm. The Donaldson filter is supposed to be a very good filter. I’ve run it before on my 18’ and I have 4 of them in my shop. The only reason I haven’t run them on my newer truck is because if you go to the Donaldson website and pull up the DBL 7349 where it shows the specs and applications, it doesn’t list Ram trucks on it. It doesn’t list any automotive applications. Only refer and ag equipment. My truck is still under warranty.
OLEJOE
Well-Known Member
The bypass is in the engine or the filter mount on the engine.
The only filters I have seen for our application that have a bypass built in are Microgard and Premium Guard.
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There isn’t supposed to be a bypass with the filter for these engines. The filter bypass is built into the filter head.
Well now I do feel dumber. I guess if I thought about it before flappin my gums, I'd know I've not seen any bypass on the filters I've installed. <going for more coffee>
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I'm also under warranty, for quite a while with my Max Care, and have zero concerns running the DBL7349. If you lookup the Donaldson cross to the 05083285AA Mopar filter it lists the P558615. On the P558615 the DBL7349 is listed as an upgrade, and on the DBL7349 page it lists the P558615 as the standard filter.
All good, it's not the first time I've seen it discussed.
OLEJOE
Well-Known Member
At this point in time my truck is running so well that I’m almost afraid to change the position of my mouth when driving it with all of the problems I see other people having on here. I asked the dealer if they were seeing many vehicles with the regen issues and he said they have had 2 and resolved both of those. 1 was a broken charge hose clamp and egr on the other. It’s quiet, smooth, powerful and haven’t had any regen issues. Knock on wood.
Renatnom
New Member
Hi all. I recently picked up a 2022 2500 with a Cummins. At 74, changing the oil myself could be a challenge. Is it relatively easy? Any directions on how to do it? I’ve done plent of gasoline engine oil changes. Or, what would be the average cost to have the dealer do it for me? Fuel filters included. Thank all.
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CdnHO
Well-Known Member
I am 76 and I do it myself. Been doing it myself for 50 years. LOL. Probably save over 400 doing it myself AND I know it is done right.
CdnHO
Well-Known Member
Lots of videos on You Tube that show you how. Get your filters from Geno to be sure you get the genuine article. I don't trust Amazon with my 100K truck.
OLEJOE
Well-Known Member
I’m 68 and have had both shoulders operated on and I do all of my maintenance work. The hardest part of the oil change is getting to the filter. Turn the wheels to the left and it gives you a little extra reach. Or you can remove the hose from the air filter to the turbo and do it from the top. The hardest part on the fuel filters is the initial force to break the cap loose. Once it breaks loose, it turns pretty easy. Be sure to use a 28mm 6 point socket so you don’t round the nut off on the filter caps. It doesn’t take an extraordinary amount of strength to do either oil or fuel filter changes.
I second the suggestion to get your filters from Geno’s.
John Jensen
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I'll be 90 this year and still doing oil changes myself. However, the first one on my 2020 HO I had to go to the dealer because I couldn't loosen the filter. Like @OLEJOE mentioned, I do it from the top.
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Renatnom
New Member
Thank old timer. Gives me renewed confidence!
Renatnom
New Member
Nice, this gives me SUPREME confidence.
Yeah, when I took off my stock oil filter, the wife looked at it afterwards and said what happened to that one. I was almost to the point of popping a screw driver through it to get it loose, but it finally caved.