Based on current price $18.12 May and $33.95 December that is...

Based on current price
$18.12 May and $33.95 December that is 87.36% increase to avoid any losses
$18 12 May to $40.00 WTI NOW that is 120% gain in oil, based on current OOO price $5.27 price will be approx $11.59 based on figures above.

If it comes to Tuesday, new price $25.14 will roll out and $33.95 Decemer that you will need 35.044% to break even. WTI will need to be $33.95 through out this contract till December...

If you are Holding it as $40 till Decembers contract $33.95 then that's only 17.82%, + $5.27 price = 0.94 cents + $5.27 = $6.21

Please correct me if I am wrong ?