You must’ve been to my house recently. Beautiful original hardwood floors, circa 1928, still in good condition . . . but covered by a total of FOUR layers of butt-ugly linoleum . . . affixed to the hardwood with TAR. I excrete you not — TAR. It’s taking forever to get all that crap off, but I’m pissed off at their stupidity and refuse to quit.
My DH and I were faced with the exact same situation when we were renovating our old house.
What we ended up doing was buying a Johnson wood cleaner that warned DO NOT USE ON ASPHALT TILE. We would pour that stuff on the wood/linoleum edge and let it soak in and work it under the linoleum for a bit, and then pop off the tile and scrap off the tar with a big putty knife. We went through lots of cleaner and rolls and rolls of paper towels, but the floor was not marred at all when we got done.
You just need to be careful of the waste products so you don't get spontaneous combustion and burn your house down.
WD40 takes tar off of wood.
Tar? Linoleum? Well, natcherly I assume you got all the necessary EPA , OSHA, etc. permits to handle and dispose of all that gunk and asbestos. No doubt you engaged a certified disposal scammer? Yep, I’ll betcha did all that? You have my sympathies and best wishes for a nice hardwood floor. I’d wish hellanddamnation on the sinners that did all that but I expect they’ve long since gone to their final rewards?