I'm baffled.

I've installed close to 10 or so bypass filtration systems on different vehicles and all of them have worked as planned.

I recently installed an Oil Guard on my truck and the canister is not heating up properly. The top is hot, but the last 4-5 inches is barely warm to the touch. I've even taken the filter out and it's still performing in the same manner (canister not getting hot).

My pressure source comes from the bottom plug/port on the oil filter cooler assembly. I also tried the Amsoil sandwich adapter to source my pressure from, and it didn't solve my problem either. I'm running my return line to the oil pan via a self tapping hollow bolt. I've verified that there's no obstruction in the lines.

I contacted Oil Guard and they even went so far as to sending me a new unit to alleviate any machining issues with my old unit. The new unit didn't help.

I had an Amsoil bypass BMK-11 on my truck prior to my Oil Guard and it functioned and flowed as a bypass filter is supposed to function.

What in the world is going on?!

...I've even taken the filter out and it's still performing in the same manner (canister not getting hot)...

I asssume this means you removed the internal element and it still doesn't get hot? If so that would imply there is little or no flow ... ??? .. It's been a while but when I first installed my Oil Guard I checked the case temperature and the whole case was warm to the touch ... I'm also feeding mine from the plug on the bottom of the oil filter adapter and returning to the pan through the drain plug ..

Arkapig, are you checking to see if any flow is coming out of the return? Where is your return? Can you see it?

Update....I went to a hydraulic shop this morning and purchased a gauge and the proper fittings. The pressure source can definitely be ruled out as a problem. Idle pressure with warm oil was around 40 PSI and when pushing on the go pedal it spiked to around 68 PSI.

On a side note.....I felt the canister after I got back from running around town and noticed that the warmth is moving down the canister, which indicates more flow through the element and return line.

Hey RFDV, is your entire canister warm or hot to the touch?

...Hey RFDV, is your entire canister warm or hot to the touch?

Yes, Last time I checked .. always hot ... I remember checking it afer installing the filter ... I'll try and remember to check it today and let you know ...

Arkapigdiesel,

Where did you mount your BMK-11? Thanks in advance.

Arkapigdiesel,

Where did you mount your BMK-11? Thanks in advance.
Check out the pics in my garage.

If you are interested in the mounting plate I fabbed up let me know as I'll sell it being that I no longer need it. The plate is 1/4" steel with all of the holes already drilled.

Arkapigdiesel,

So I think I am seeing a plate for the unused alternator spot? The return goes to the oil filler cap(which is what I want)?

The only issue is that it is messy changing the bypass filter?

Since I have an 04 LB7, my guess is that the unused alternator spots are the same..not sure on this one.

Arkapigdiesel,

So I think I am seeing a plate for the unused alternator spot? The return goes to the oil filler cap(which is what I want)?

The only issue is that it is messy changing the bypass filter?

Since I have an 04 LB7, my guess is that the unused alternator spots are the same..not sure on this one.
The plate is mounted using the existing bolts/holes for the condensor actually. It's returned to the filler cap, but you can return it wherever you want. By the way, I also have a cap with the Amsoil swivel already installed if you are interested.

I only changed the filter once, and with a rag underneath I didn't spill a drop.

Your '04 is the same as far as where the plate will go. Shoot me a PM if you want the plate and/or the cap with swivel.

Arkapig,

You may be on to something ..I just checked my OG after a 1 hour round trip (1hr shut down in between two 1/2 hr runs) – filter housing was stone cold .. the base was warm .. the full flow was also warm but not hot .. ambient temp was about 30 deg f … the Allison pan was also warm .. I have a 3 hour trip coming up in a few days .. I’ll check the OG on the return trip to see if it’s warm/hot …the element currently has about 12kmiles on it … I've checked it in the past and it was hot .. I've also cross sectioned the strings and found soot concentrated in the center of individual strings ... ????

Thanks for checking RFDEV. I think this is something we need to keep an eye on.

...I think this is something we need to keep an eye on.

Yes .. definitely … one possible explanation .. with the large canister and slow flow due the restriction orifice in the head , the canister is just being cooled by the flow of cold air under the truck … The only time I’ve checked this before was after installation and air temp was relatively warm …. the orifice will also restrict flow with or with out the element .. might explain why you found it wasn’t warm even with out an element ... still puzzling … ??? … ultimately might be dumping this filter on ebay ..

Yes .. definitely … one possible explanation .. with the large canister and slow flow due the restriction orifice in the head , the canister is just being cooled by the flow of cold air under the truck … The only time I’ve checked this before was after installation and air temp was relatively warm …. the orifice will also restrict flow with or with out the element .. might explain why you found it wasn’t warm even with out an element

This is one of the reasons why I like the return in the oil fill tube. I can see whether it's working or not.

Just returned from three hour trip – all highway driving with an avg speed of 65-70 mph .. checked the OG after I pulled into the garage and the whole canister felt like the same temp as the tranny pan and full flow filter – hot but not so hot that I couldn’t keep my hand on it… also noted that the temp gauge was running between 195 & 200 during most of the trip .. out side temp in the mid 30’s … the other day when I checked the OG canister after a 1 hour round trip the temp gauge was 180 … seems to indicate the flows is best when both thermostats are opened up and the oil is “hot” .. the oil also flows though the cooler before it gets to the feed port we’re using ...

Just returned from three hour trip – all highway driving with an avg speed of 65-70 mph .. checked the OG after I pulled into the garage and the whole canister felt like the same temp as the tranny pan and full flow filter – hot but not so hot that I couldn’t keep my hand on it… also noted that the temp gauge was running between 195 & 200 during most of the trip .. out side temp in the mid 30’s … the other day when I checked the OG canister after a 1 hour round trip the temp gauge was 180 … seems to indicate the flows is best when both thermostats are opened up and the oil is “hot” .. the oil also flows though the cooler before it gets to the feed port we’re using ...
If the canister temp felt the same as the full flow filter then it's functioning as it should.

*UPDATE*


I changed my source by tapping into the oil galley. That 100% rules out any pressure/flow issues to my bypass.

I ran my truck around for 30 minutes or so and it's the same thing, hot on top and the further down the canister I go the cooler it gets. The very bottom of the canister is barely warm to the touch.

Apparently the Oil Guard is designed to slow flow through the element. I don't guess that's a bad thing, but I definitely expected more flow through the element.