I have had my Feroza in the workshop 3 times with a loud squeal in the engine turned out it was blocked oil lines coming from my sump. They have stripped and and cleaned sump and blown thru galleries. It stopped for a few months and now it is back again. This has cost me many dollars at workshop.
Can u help?
There could be top end or bearing damage if the oil lines were not flowing oil as they should. The noise could be a wiped camor something in the top end that is fed by the oil lines and was starved of oil when the lines were clogged and got damaged. Check the oil for metal particles as this will tell you if there is engine damage if there are any present.