$5,495 Good Used 2005 Mercury Optimax 90 HP 3-Cyl DFI 2-Stroke 20" (L) Outboard Motor. Model number: 90ELPTO. Serial number: 1B190052. Weight - 375 lbs. 125-127 PSI compression on all three cylinders. 147 Hours Logged on Computer. Oil Injected. New Gear Oil. Has been used in Fresh Water. Electric Start. Power Tilt/Trim. NOTE - Please be sure to check all shipments for any potential damage during transit. It is the sole responsibility of the receiving party to fully inspect the product at the tim