Filter is good but at this point it is not going to significantly delay the need for an overhaul off at some point in the future. Better just to wait and put it on when the engine is overhauled.
As mentioned keeping the oil level at 6 often prevents loss out the breather.
The breather expels oil mist, fumes, acid, moisture, and other junk. A separator tries to return just the oil. NONE of them do this 100% so a separator while keeping the belly clean is also detrimental to the long term health of the engine by putting stuff back that should have been expelled.
As mentioned keeping the oil level at 6 often prevents loss out the breather.
The breather expels oil mist, fumes, acid, moisture, and other junk. A separator tries to return just the oil. NONE of them do this 100% so a separator while keeping the belly clean is also detrimental to the long term health of the engine by putting stuff back that should have been expelled.