Not permanently. But a tank or 2 mixed at the usual 50:1.
Product information here: https://penriteoil.com.au/assets/pis_pdfs/10 TENTHS RACE CASTOR OIL 20W-40 (Full Synthetic).pdf
I recently won 8L of it at auction for a good price. And you know, it smells like speedway so water skiing would have a unique smell to it. far nicer than normal TC-W3 mineral or synthetic 2T oils.
Unlike some castor oils. this is an ash-less formula
Boat/motor is used for water skiing in fresh water.
Am I nuts. or just send it.... ahahah.
Regards
Jordan