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Dual oil filters yield many benefits to our sooty diesel engines, it adds that extra quart of oil to the system, and adds that extra filter! The HMMWV's in Saudi had them installed due to the harsh sandy/dusty environment they operated in.
My truck is a 6.5L diesel, I don't know about other motors, so check before you buy.
Installation of the Gulf States (Saudi) Homologation kit (Dual Oil filtration kit):
Purchase the dual oil filter adapter kit, Surplus Enterprizes carries these (616) 651-3707.
Verify that you have:
The special tools are:
Installation of the new dual unit:
Don't forget to go back and re-forms the Center Bearing (drive shaft) and ensure it mounts in the exact same position it had been installed. Again, a lot of gnashing of teeth, yelling and screaming. It probably would have been easier if I removed the underbody protection. But, I did it anyway.
Got the Dual Oil kit yesterday. Dual Oil Kit includes:
2 Purolator oil filters
Basically you remove the old filter adapter and install the new with new gaskets and such.
It will take an extra quart. And should be changed according to schedule. Having the dual oil filter system does not mean you can neglect changing your oil for longer than reccomended for one filter.
Earlier today, I assist Doug Zirkle with installing his Dual Oil Filter kit from AMG.
I know that there has been some interest on the list, so I took some pictures, and here they are...
AMG kit for dual oil filters. The Filter connector from the existing adapter is reused in the new installation. The bolt holding the adapter to the engine is not re-used.
The only difficult part of the installation is getting to the bolt holding the assembly to the engine. It is 1-3/8" (35mm) - a difficult size to find in 1/2" drive socket. (We finally used a 36mm socket.) We also had to detach the front drive shaft center support to allow the drive shaft to be moved enough to gain access to the bolt. The driveline protection did not have to be removed.
Parts.jpg - Parts contained in the kit
Fig1.jpg - Disassembly of Old Parts
Fig2.jpg - Assembly of New Parts
OldParts.jpg - Old Filter Adapter
Done.jpg - View of installed assembly
Dual Oil Filter kits are also available from Adventure Accessories
AM General supplies a dual oil filter kit for 1992-1998 HUMMERs the part number is 05744867 and can be purchased from your local dealer (like me!)
> has anyone installed the AMSOIL Dual Remote Oil Filter BMK-3R(Right) > or BMK-3L(Left) BB100, or can anyone describe the oil circuit, the > benefits, > and drawbacks of the remote v.s. the factory dual system? > Gerald, buddy?
Keri buddy, I am not familiar with the AMSOIL setup you mention. Dual filters are designed to filter a higher volume of oil. The filters are not sequential or of different types so the filtration is the same. However, if one gets clogged up or has higher resistance, the other filter takes more oil. Remote mounting the filter is usually a space/convenience thing or, as Dave mentions, adds an easy way to add a cooling loop if you didn't have one already. If the filters are finer than normal, the two filters can give better filtration. That is, if each filter has half the flow of an original filter and you have two filters now, you have the same flow rate (with possible higher pressure loss though) as the old single filter.
I don't really expect to see much with an extra quart of oil. Increasing the thermal mass by so little shouldn't affect oil temperature much. If you think about the overall picture, the engine introduces a certain amount of heat into the oil. The cooler dissipates a certain amount of heat. That's really all that matters. The oil acts like a capcitor and stores up excess heat that the cooler cannot dissipate right away. So if you have the same heat being absorbed by something with more thermal mass, its temperature will be lower. This is most beneficial for a system whose heat source (engine) varies the heat output frequently. In steady state, all that matters is ratio of cooling to heating. Oh, one thing to note is that the temp. of the oil is very important. The hotter the oil, the greater the temp difference with the air so it dissipates more heat than lower temp oil. Note too that the oil pan, lines, filters, etc all radiate heat. However, compared to a heat exchanger, I think the effects of having a second filter will be pretty low.
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