Oil filters again?

[Guest Kuster13]

I know this topic has been gone over recently on both sides of this forum and I have searched the past threads and read the tech section on the home page.

When I got my truck, it's oil filter canister has three lines. The canister has one fitting on the top side labeled inlet, there is a fitting on the very bottom labeled outlet. The third fitting is located near the bottom also but is a quarter of the way up the side.

From everything that I have read there should only be two oil lines? Two of the lines were plumbed to the upper fitting on the block and one to the fittng above the oil pressure regulator.

Is there suppose to be a third line? Again any help will be greatly appreciated

Tom

[Young Ed]

Only filters I have seen with a third hole is a drain. I would suspect thats what your near the bottom one is.

[Merle Coggins]

I agree with Ed. The one part way up from the bottom would be a drain to be used when replaceing the filter.

Which two lines are connected to the oil pressure galley? The "Inlet" line should be pressure from the oil pressure galley. The "Outlet" should go in by the pressure regulator. The drain should have a plug in it.

On my filter the bottom in the "Inlet" and the upper connection is the "Outlet". You can also see the drain plug near the bottom.