Seafoam in crankcase? (redux)

[matthew1]

What I do to introduce seafoam to the manifold by myself is:
Use a cup or something ( I cut a 20oz Coke bottle off)
get a piece of vacuum tube about a foot long, uncap a port on the vacuum tree, connect the line. Plug the end of the line with a golf tee or something to start the car.
pour the Seafoam into the cup, uncork the line and dip into the seafoam, as it bogs, push the line down to seal against the bottom of the cup, or just pinch the hose, as the revs recover, moderate inatake vs bog until its all sucked up, then let it die or shut it off.
Then disconnect the hose and recap your vac tree, wait 10 mins, then rid your neighborhood of mosquitoes

Almost identical to how I use Seafoam in my Volvo.

[MarcM]

Finally got to oil change after drain plug fiasco. Oil ended up being a deep maroon color.
Filter appears to have been a LuberFiner, but printed # is an R837 instead of P837. Put in a Manner (just like the man said)