Amsoil dual bypass

[lwiseman]

Is oil pressure loss going to be a serious problem after installation of the amsoil dual bypass filter system? Can I hear from you guys that have it installed for a long period, also?

I have read that some have worried enough to remove it and gone with the single bypass system. Thanks in advance.

 

[willyslover]

NON issue. . go for it. . our dash gauges read low anyway. . put in a mechanical at the port and you'll see

 

[RoryTek]

I saw no drop on my setup, installed the bypass at 140k on the clock. Pressure still reads 40psi with 15W-40 also was the same with 5W-30.

 

[PLaFrombois]

Didn't see any pressure loss. Go for it you shouldn't have any problems. Start an oil analysis program. I've guys that check at 8-10,000 with their analysis. Most of them change their full flow filters at that mileage interval, and every other for the By-Pass.

Paul

 

[Deezul1]

Mine also shows 39-40 lbs at speed, didnt notice any drop after install. After doing the dual bypass I would do the single next time because the only thing the dual does is move the stock filter up next to the bypass filter. The single bypass gives you the same filtration system just has the filters located differently. Also with the single bypass you can still use stock Fleetguard filter for the full flow and it doesnt work on the dual setup. I use a Wix filter on my full flow and it takes a Ford style filter which is a lot cheaper than the Amsoil unit. PM me for the WIX pt#.

 

[JCyrbok]

I switched

from a dual to a single. Main reason was this. CUmmins ( and DC) REQUIRE for my truck (2001 regular output cummins 2500) that at speed there be a MINIMUM of 45psi oil pressure. At speed for my truck is 2000rpm.



With out the dual and just stock filter and checked with both CUmmins quick check and mech gauage I saw well over 45psi at speed.



Installed the dual and again checked with both above methods and had 39psi at speed. Which is low for a 2001.



Kept the dual for about 5 k and had to add aprox 2 qts oil but had no leaks. I think that it was vaporizing or something. Also noticed that truck got hotter faster than with stock set up.



Switched to single and a fleetgaurd full flow and I am now back to what I was at with just the stock set up and have not added a single drop of oil in the past 3. 5K and truck warms up at the same rate as prior to the dual. I now have the piece of mind that I am with in spec and will have less of a hard time getting a engine failure covered if it ever happenes ( knock on wood that it doesnt).



Again this is only MY observations on MY truck. I have no formal mechanical training and I am not a Fluid Engineer.



If u are interested check my add in the classifieds for my dual system with a CPFF billet adaptor and SS hoses.



Hope this helps. Not meaning to start a war but though u needed a different opion to make an informed decision.

J-



Did u guys that are showing 40psi all the time have the TSB for low oil pressure done? The one that make gauage read 40psi even with the key off?

 

[Deezul1]

I dont believe the correctly valved (12) models had to deal with that TSB

 

[jhawkins]

I ran the dual bypass set up for a couple years with no pressure drop at speed but the oil really got dirty looking. Oil was sampled regularly and always came back good to use. Then I added stainless hoses cause I was getting some wear and was afraid of blowing the ones that came with it. At the same time I also added the neat oil filter adapter that one of the members sells. After that my pressure went to near zero when I ran the RPMs up so I just took the whole thing off and reinstalled a standard full flow filter and the pressure is solid at 40 PSI. If I add it back I think I would just go with the single bypass filter and leave the full flow filter where it is. One guy had a neat setup where he is running a dual filter rig which has two of the bypass filters and leaves the full flow filter in the stock location and claims his oil looks like new.