Last time i checked, amsoil said it was a bad idea to use the dual filter (bypass and full flow) kits on a newer 2004. 5 and up cummins do to the drop in oil pressure. Is that still true? if not, id like to get both my filters in the same place.
Amsoil Inc. did a re-design recently of the Duel-Remote By-pass Systems, and they also changed the Stock Number. The new number is:BMK-25 for the Dodge/Cummins applications. In their re-design, they did increase the size of the hoses to 1/2 ID, and made a few changes to the mount itself. I do not know af anyone that has complained about them.
wayne
Wayne I have never had a problem withe old dual setup on my 04. 5. I am using Tri County Machine mount and hoses though.
That is good to hear. Some of the later Dodge/Cummins applications did experience a low or no pressure indication on the gauge in the dash, but when the issue became more prevalent, Amsoil Inc. and Dodge did some testing and found even when the gauges were indicating low or no pressure, there was still plenty of oil pressure when reading from a reliable direct reading oil pressure gauge attached to the engines.
Good. Do they still restrict the flow in the filter head to create a pressure drop to force oil to run through the bypass filter?... ... They also changed the flow of oil within the mount to go to the Full-Flow filter first, and the by-pass filter last. ... ... .
Bingo. Amsoil never did come clean on how they did their "tests" and/or show data to support their claims on their tsb thing.Which still doesn't make sense to me... How can a mechanical gauge see more than 6psi when the switch doesn't? I have my mech gaguge hooked up in the port after the psi switch and with just the bypass it can take 3-4 seconds to see any oil psi on that side of the block if the oil is COLD, I would imagine that if you read pressure on the port in the oil filter housing it would come up much quicker. . which could be why the OEM switch was saying pressure was low, and the study showed it was fine (assuming that Amsoil tested the pressure at the filter head, where it's the easiest to get a reading)
That is good to hear. Some of the later Dodge/Cummins applications did experience a low or no pressure indication on the gauge in the dash, but when the issue became more prevalent, Amsoil Inc. and Dodge did some testing and found even when the gauges were indicating low or no pressure, there was still plenty of oil pressure when reading from a reliable direct reading oil pressure gauge attached to the engines. ...
Good. Do they still restrict the flow in the filter head to create a pressure drop to force oil to run through the bypass filter?
Bingo. Amsoil never did come clean on how they did their "tests" and/or show data to support their claims on their tsb thing.
The Dodge Corporation officially participated in the tests? Can you tell us the title(s) of the Dodge representative(s) in attendance? Can we get the actual test data to support the claims? What specifically is "plenty of oil pressure"? What was the type of gauge used? Was more than one gauge per engine used? Was it calibrated or checked to verify proper operation both before and after the test? Where was the gauge(s) attached? Was more than one engine checked? How many times was the test repeated? Were any of the test trucks allowed to sit for extended periods to allow for oil drainback before repeating the test? Etc.
Amsoilman think Amsoil will comp me or some sort of trade in to upgrade to the better design??
We are talking about two different restrictions. Yes I understand the need to restrict flow through the bypass filter itself. What I am asking is if the redesigned filter head has a restriction in the main oil flow to the engine in order to force oil to flow through the bypass filter. The last design had a spring valve to create this back pressure.FIRST QUESTION: In any oil by-pass filter system, there is always a need to restrict flow through the by-pass filter, which does increase/maintain pressure behind the restriction devise, which is usually a small hole. (orifice)
This is due to the "tightness" of the filtering media, in Amsoil's case 2 MICRON. If full pressure and flow were directed through this type filter, it would rip the fitering media apart in quick time.
NEXT TWO QUESTIONS: I have no idea, I just know what I was told by the person behind the engineering of the by-pass systems. I was also told, they spent several months in the design of the systems.
Now if you can't believe what someone tells you from the head of the department who engineers a product, I guess you would have to be there to oversee the situation in person.
Either any increase in the delay of oil pressure at startup is bad or the above quote from Amsoil’s website is wrong. Which is it? The truth should not be dependant on which product you happen to be selling at the time. That is the rub here. There is conflicting information from Amsoil which has not been addressed. Just the "trust us we tested it".amsoil said:Independent studies have concluded that engine wear during start-up is a major concern. Even though engine components remain dry for only a short period of time at ignition, when this circumstance is multiplied by the 400 to 600 dry starts a year by the average motorist, the potential for harmful metal-on-metal contact and significant wear is great.
That is good to hear. Some of the later Dodge/Cummins applications did experience a low or no pressure indication on the gauge in the dash, but when the issue became more prevalent, Amsoil Inc. and Dodge did some testing and found even when the gauges were indicating low or no pressure, there was still plenty of oil pressure when reading from a reliable direct reading oil pressure gauge attached to the engines.
The truth is, every Full-Flow Oil filter has a built in by-pass of some sort, and most of them open when there is 7-9 PSI differential between inlet pressure and outlet pressure, so in essence, the valves are open quite a bit of the time!
And to follow up on the Amsoil Duel-Remote, as far as vehicles showing low/no pressure at times with one of these units installed, the Dodge/Cummins is the only application that I have ever come accross where this occurs, and it is caused by the way Dodge has the pressure gauge reading oil pressure, which is just a "switch" that turns on a circuit within the computer to give some sort of oil pressure reading.
BTW, when I was working with the local School district and their Cummins powered "Bluebird" buses, Cummins gave us a minimum of 10 PSI oil pressure at Idle!
Wayne I have never had a problem withe old dual setup on my 04. 5. I am using Tri County Machine mount and hoses though.
I'm not anti-Amsoil. I think it's great stuff and I use it in multiple compartments of various vehicles that I take care of. However, I have to call you out on this latest round of semi-truth.
How many oil filters have you ever cut open? All I've ever found in my filters was an anti-drainback valve. The cold oil/filter restriction bypass valve is found it the oil filter base on our Cummins engines as well as most of the CAT engines that I repair at work. I'm not saying hard and fast that NO filters have internal bypasses, just that I haven't seen one.
From the 2001 Dodge Ram Factory Service Manual:
OPERATION
A gerotor style oil pump draws oil from the crankcase
through the suction tube and delivers it through
the block where it enters the oil cooler cover and
pressure regulator valve. When oil pressure exceeds
449 kPa (65 PSI), the valve opens exposing the dump
port, which routes excess oil back to the oil sump.
At the same time, oil is directed to a cast in passage
in the oil cooler cover, leading to the oil cooler
element. As the oil travels through the element
plates, it is cooled by engine coolant traveling past
the outside of the plates. It is then routed to the oil
filter head and through a full flow oil filter. If a
plugged filter is encountered, the filter by-pass valve
opens, allowing unfiltered oil to lubricate the engine.
This condition can be avoided by frequent oil and filter
changes, per the maintenance schedules found in
the owners manual. The by-pass valve is calibrated
to open when it sees a pressure drop of more than
344 kPa (50 psi) across the oil filter.
Like I stated previously, both of my friends that used the dual remote system thought that the no pressure warning was due to the screwy way Dodge uses the ECM to make our gauges into dummy lights. However, the findings were backed up by manual gauge readings. No pressure is no pressure. NOT a software glitch. I have no idea why it works the way it does, but it's 100% truth.
From the 2001 Dodge Ram factory service manual:
DIAGNOSIS AND TESTING—ENGINE OIL
PRESSURE
(1) Remove the engine oil pressure sensor and
install Oil Pressure Line and Gauge Tool C-3292 with
a suitable adapter.
(2) Start engine and warm to operating temperature.
(3) Record engine oil pressure and compare with
engine oil pressure chart.
CAUTION: If engine oil pressure is zero at idle, DO
NOT RUN THE ENGINE.
Engine Oil Pressure (MIN)
At Idle 103. 4 kPa (15 psi)
At 2000 rpm 310. 2 kPa (45 psi)
If minimum engine oil pressure is below these
ranges, (Refer to 9 - ENGINE - DIAGNOSIS AND
TESTING).
(4) Remove oil pressure gauge and install the oil
pressure sensor. Tighten the sensor to 16 N·m (144
in. lbs. ) torque.
Note several things:
1. Minimum hot oil psi is 15.
2. Oil psi is measured with a manual gauge from the same location on the engine as the sender/switch reads from.
3. If oil psi is 0, Do Not Run The Engine.