Oil tank valve issue.

[Stratf01]

Hi I have an oil tank valve that needs replaced as it will not shut off fully.
I understand that probably the best way forward is to wait a few months till oil level low then raise valve end of tank but is there a way to bung the oil if say you encountered a leaking valve?

I was thinking many some kind of plug or plastic flap fashioned to a stick to seal inside outlet.

Any thoughts really appreciate
Thank you.

 

[Timmy D]

Do it live, ensure you will catch any spilt oil, be quick lol.

Maybe Jet swet? Personally never used it, marketed for water.