Amsoil Bypass on a 2019 Duramax

Messages
10
Location
NY
My largest annoyance with my truck is the oil filter being at a 45 degree angle. No matter how hard I tried, it always seemed like I was getting oil on the frame and ground from changes. I’m interested in extended OCI, so started researching bypass setups. Though I don’t run Amsoil, their setup seemed to be the most complete (minus brackets) and in an ideal spot.


I watched this video on the amsoil bypass setup. He actually sells the mounting brackets, which piqued my interest. After contacting the author, their price was about the same cost as the bypass setup ($$$), so I moved towards doing my own bracket for a few hours labor and $50 in materials.

Video is definitely worth watching. It’s a step by step guide on how to install. His website also is a great quick reference for fluid capacities.

Here's what I did to fabricate for a mounting bracket:
-3" x 36" X 3/16" bar stock. This is mounted to the frame and holds up the oil filter assembly. Cut down to 14" as I recall and bent in my hydraulic press into a right angle.
-12" x 24" x 16 gauge sheet metal. Rock guard. Don't recall the measurements, but I had to notch an inch from the top to allow the hoses and parking brake to clear.
-Used the sheet steel to fabricate one smaller bracket to prevent the rock guard from bouncing around.
-Used some electrical/hose clamps to route the hoses above the frame
-Primed and painted it all black.
-Bought some stainless bolts to hold everything together.
-Assembled the bracket sandwiched in between the filter assembly and the bracket provided by amsoil. Their hardware worked great.
-Drilled and tapped the frame. Bolted the bar stock straight against it. I tried to use the method in the video, and it didn't pan out.

When you buy the bypass setup from amsoil, it's best to buy the membership for the discount. Then buy enough full flow and bypass filters for however long you think you'll have your vehicle for. I recommend a ratio of 3 (or 4) full flow to one bypass. If the bypass are good for 60k, that works out to 15 to 20k per full flow filter.

From my research, there wasn't a soot condemnation limit for CK-4 that I could find. CJ-4 limited it at 1%, and I would guess that it would carry forward... With the bypass filter installed, insolubles rose half as quickly as they did before installation (admittedly from 1 sample).

I have some pics that I’ll include later on today in a follow up post. Need to climb under and get some better ones of it mounted.
 

Stuville77

Thread starter
Messages
10
Location
NY
Fabrication. I’ll snag some pics with dimensions when I climb under the truck, but this gives you a general idea.
 

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Stuville77

Thread starter
Messages
10
Location
NY
Pics on the truck. It hasn't even snowed that much up here (Syracuse), and that's reminding me I need to get my truck undercoating re-sprayed.

Tried to name/group them so it makes sense.
 

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Stuville77

Thread starter
Messages
10
Location
NY
As you can see, it doesn't hang below the frame rail and is a nice cozy fit :)
 

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Messages
1
Location
AL
People really look down on Amsoil sometimes but this kit is a quick & easy no brainer.

It works well & for the Duramax it relocates the filter lol.

I have one on my LML. Numbers came back great.

I have also noticed a lot of guys mount them outboard of the framerail. I used the MadJack Diesel bracket as it keeps everything inboard. A bit cleaner/hidden.
 

Stuville77

Thread starter
Messages
10
Location
NY
I did check the Mad Jack out, and it’s a solid piece of kit. I think I figured if I had to fab a rock guard, I might as well do the mounting bracket.

Glad to hear the bypass is giving you good numbers.
 
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