Bypass Filter Install Location to Allow Drainback

[Lost Pup]

I have been musing the Motorguard install in my 02 F150 and upon reviewing/searching the threads noticed RalphPWood mentioned "On some brands of TP filters I have put air fittings in the tops and pushed the oil out with an air pump".Link To Thread

I have the greatest amount of space available underneath the truck along the frame rails and would consider installion of the MG there. Of course filter change mess is the issue if I can not evacuate the oil from the MG placed below the actual permacool adapter oil filter adapter. The MG casing does have the cast boss on the filter to be tapped.

Ralph and All

What do you think ? Has anyone ever seen the air fitting install on the MG ? What type of "air fitting" to install that would work with oil ?

Thanks

 

[RJCorazza]

I've heard mention of a drain valve to allow air in the MG, but not a fitting to introduce compressed air. Makes sense, but I have no idea what type of fitting would standup to the temperature - perhaps a regular schrader?
On my F150 I put the MG on top of the left frame perhaps 6" forward of the front tire center. It is higher than the sandwich plate and I loosen the MG (hot) and let it sit for 30 minutes or so. I drilled holes for self tapping style screws and used JB weld under the bracket. It is rock solid after almost 3 years.

 

[RalphPWood]

On my Legacy I rigged up a valve on the sandwich adapter and a tee with an air tank fitting. I would close the valve so that the oil wouldn't go anywhere except thru the Motor Guard. I would hook up a cigarette lighter air compressor. I found out later that all I needed to do was to loosen the tee handle when the filter was still hot and let air in so the oil would drain out. If the MG-30 is mounted too low to drain you can put a tee and valve at the outlet. Open the valve and loosen the tee handle. With the MG-60 you can drill and tap the boss at the bottom and add a valve. Open the valve and crack the tee handle.

 

[Quickbeam]

I use QC couplings on mine. Not the cheapie pneumatic ones but stainless steel miniature self sealers. Makes dealing with the filter easy. Same with the return line to the oil cap. I've never had a problem with draining but I could easily inject air into that coupling.

 

[Gary Allan]

If the filter is mounted high enough, even if routed to the original filter mount, it should partially empty. It may not drain back (it surely can), but can just as easily drain forward. I had to install sprung ball checks to prevent my lines from emptying in both directions.