I don't know if this is really the place, but I thought someone out there might be familiar with this persnickety bolt on late model cb750 oil filter housings. Any tricks? Mine won't budge and is starting to strip.
I had the same problem when I bought a used Yamaha Venture. The bolt head completely stripped. I then had to chisel the housing in half, then put a pipe wrench on what was left of the bolt to get it out. Expensive, but it saved having any damage to the engine case.
Would suggest you try a small pipe wrench before giving up. Then, you might be faced with my situation. The good part is you are not at a dead end if that happens.
"...If you can meet with triumph and disaster, and treat those two imposters the same....you'll be a Man, my Son!"