some good advice needed

[max lloyd sr2]

hi new here but just this year purchased a lovely maxum sr2 1996
with only 200hrs use on it.
attually rite now the lack of use is worrying me.
Her name is impi and she's been too 3 different countries owned by 2 pilots before i brought her from uae to oman this year
shes had 2 runs in the water first for around three hours where she ran well no problems until i got her back in boat yard and noticed the stern drive oil down below its level and upon removing the transom plug after the water drained it was followed by oil. i refilled the oil and a few days later went for another trip.
This time (lucky i took spare oil with me) she just drank the stuff taking atleast 4 ltrs so i came back too port knowing she had issues. i can not see the issue as she is the older type without the engine surround cover and im 6ft 3.
can you plz help me understand what the best option here.
im going home too uk and want too bring everything back with me that i will need too give here a stern rebuild. as i believe she was last used in 2013 and has sat in the heat of dubai for 2 years. so my engineering brain is saying the heat has destroyed all the oil seals.
and advice or help would be very welcome and all help would be repaided should you find yourself in Khasab one day as a tourist i shall take you for a trip out. so yes issue is as a few people of had this. loss of oil into bilge.
she does not take on water much so so far only thing in the bilge has been the oil i put into res for stern drive.

[Speakrdude]

Pull the drive, replace upper seal, inspect all while your in there. Ujoints, bellows, zincs, etc

[mmwjr]

welcome aboard.

If I am understanding you correctly the loss of gear lube is into the bilge, correct?

Water that you mentioned is bilge water and not from the outdrives drain plug, correct.

I suspect its the line from the lube reservoir or the transom fitting for the lube. Inspect at the inner transom plate for the leak.

[Speakrdude]

Yeah, umm,...check that first!

[shrew]

4 Litres of drive lube? That is just under 4 Quarts 3.75 quarts). A BIII drive takes less than 3 Quarts. That sounds like more drive lube than the drive and reservoir could hold.

[mikembs]

check the reservoir for cracks at the bottom. and check the hose connections.

[CGG]

Make sure the washer on the reservoir cap is still there. Can leak out there if missing.