I'd probably feel OK with what you've done if you have a filter before oil goes into the engine. A buddy just lost a second engine because he forgot to replace or even attempt to clean his oil cooler. I have my cooler after the filter but in this instance a filter last might be wise.
I have been using air pressure to push Torco out of its five gallon can. A fitting in the lid or a continuous hose to the bottom of the container and then a small hole for blowing in air is all it takes. That and pretty low air pressure. I also use an old pressure cooker and vacuum/pressure for similar tasks such as refilling shocks.