AMSOIL bybass oil filter kit?...is this a good system or are there better available?

[whosthecoolguy]

This is in the 80 section too, but I thought I should try here as well:

To start, I have searched and haven't really found the info I'm looking for.

I'd like to add a bypass oil filter system to my 1991 HDJ81 (1 HD-T Diesel engine) and have heard mixed reviews on the AMSOIL bypass system because it restricts oil flow to the full filter.

Does anyone have any experience with this system? Any thoughts?

Can anyone recommend a better system?

Thanks in advance!

-Jeff

PS. This is the system I'm refering to...

http://www.worldsbestoil.ca/amsoil/b...stallation.php

 

[HZJ60 Guy]

There are two Amsoil ways to go. #1, just a bypass filter. #2 a bypass engine oil filter combination. That double unit is the one youve heard negative views of. I have both and have never had problems with either. Just get a stand alone bypass filter and plumb it in and youll be set. Youre thoughts of doing this are correct and smart.

The FASS system isnt applicable to your truck. It is primarily a helper fuel pump, and filtration system. I dont suspect that you need a helper fuel pump.

 

[Eric Winkworth]

I like amsoil and I do currently run it in my truck, but after some research I have a hard time believing it does a better job filtering oil then the Premo system

http://www.thedieselstop.com/contents/getitems.php3?Premo Bypass Oil Filtration

this thing even heats oil to expell moisture either from condensation or a leaky gasket...

 

[gerg]

Frantz. It did such a great job on my butt that I had to get one for my truck.

 

[skoki]

I was all hot for a bypass system until I talked to a friend that is a hardcore diesel freak. His concerns were that although the oil looks clean the lubricity and other essential properties are no longer effective. In other words cleaning looking oil is not necessarily good oil. Does anyone know of testing done on oil after it has been run through a bypass filter for several thousand miles?

Rab

 

[HZJ60 Guy]

I was all hot for a bypass system until I talked to a friend that is a hardcore diesel freak. His concerns were that although the oil looks clean the lubricity and other essential properties are no longer effective. In other words cleaning looking oil is not necessarily good oil. Does anyone know of testing done on oil after it has been run through a bypass filter for several thousand miles?

Rab

With all due respect to your friend; thats the most idiotic thing Ive heard this week! As if you could "filter" out detergents????? Dah, hello boss! Of course there are a few million people who have bypass filter systems (myself included) who have sent in oil samples to a lab after, 10,000, 15,000, 20,000 25,000+ miles etc etc etc.

The bypass filtration is what allows you to go the extra distance. The OK from the lab proves it. Youre filtering out particles, that's all.

 

[gerg]

Your freak friend has interesting ideas. Is he by chance exposed to alot of volatile chemicals at his job... just curious. Yes I suppose it would be possible to filter the oil and keep it clean long enough for the oil molecule itself to break down. Personally I run Amsoil 15-40 synthetic in my BJ60. Now im not sure of exactly how long it would take to break down a synthetic oil molecule… umm im guessing a long time, but not before next year which is when I change my oil.

 

[Martin White]

Skoki, I think you might want to suggest to your friend that he do some of his own research. There is ample evidence to suggest bypass filtration is a sound idea and serves to significantly lengthen oil change intervals. It also adds to oil capacity. The only significant downside I can see is the installation cost and the increased possibility of leakage due to extra fittings.

 

[veiloctane]

I've had my Amsoil bypass for over 10 years mind you I run the biggest filter they got for it bpa110

200K km later I dropped the oil pan to check if I needed BEBS and to my surprise, the bearings still look new.
I replaced them with ACL standard bearings.

I was running Amsoil 15W40 Marine.
and have always done oil analysis every 10K km iI was able to go 40K km between oil changes oil still tested good I could have pushed it longer.

now I'm on Hotshots Black diamond outlaw oil 15w40 as they claim it will beat any oil out there and it has the most additives and highest zinc content

 

[sodafeld1]

Well, I have a jackmaster bypass filter which works well on my 2h, so plain mineral oil. 140k kms now. The filters are expensive, looks like a toilet roll, last a good while. I met the manufacturer who does believe the filter to be so fine that it would filter zinc additives for example. But you don't have flat lifters I believe, so it would depend on what oil you use (I guess).

My return line is through a hole drilled in the filler cap. Use to take out half a liter and replace with fresh half liter every 1000km with the engine running but I gave up on that. Too much oil to deal with.

The rockers under the return line are very clean which made me feel like building a dribble bridge in the valve cover to clean all the rockers at the same time rather than just under the filler cap...one day.

I still change oil every 5k kms.

The idea apparently came up with the germans trying to get to sth america by submarine after wwii to minimise downtown of oil changes.

It certainly minimizes carbon in the oil.

An oil spinner in combo with bypass is meant to be the ultimate for clean oil. You need minimum 70 psi oil pressure to spin most spinners.

 

[veiloctane]

there's also a centrifuge one Spinner ll Centrifuge Oil Filter - https://forum.ih8mud.com/threads/spinner-ll-centrifuge-oil-filter.118596/

I believe the 60 series 2H motors came with them kinda cool that they used to use a centrifugal oil filter from the factory

 

[veiloctane]

Frantz. It did such a great job on my butt that I had to get one for my truck.

thats the thing that turned me away from frantz... it looks like TP.

i think the spin-on oil filter is easyer to change hence i went amsoil bypass

 

[bj70bc]

The idea apparently came up with the germans trying to get to sth america by submarine after wwii to minimise downtown of oil changes.

This is interesting, where did you come upon this info?

Is the general consensus that these bypass filters are a good idea?

 

[sodafeld1]

This is interesting, where did you come upon this info?

Is the general consensus that these bypass filters are a good idea?

The guy who makes Jack master bypass filters was telling me.

Bypass oil filters are a simple principle really.

I think it has to be a good idea, same as spinners. Lots of industrial machines have extra filters and spinners, trucks especially. Truth is domestic market is steered towards high turn over, consumption, planned obsolescence. It is better for a manufacturer that you but a new car every 7 years.

All hearsay mind. Shall take awhile for me to tell you if I make million kms from the one engine, if I don't have an accident and ride it off in the mean time!

A second fuel filter with water collector was one of my first add ons.

 

[bj70bc]

ya a did a racor fuel filter inplace of the stock sedimenter when i replaced the head and turbo'd it