The duration that 5 gallons of gas will last on a 90 hp Mercury outboard motor depends on several factors, including the boat's weight, speed, and operating conditions. Generally, a 90 hp outboard consumes about 10-12 gallons per hour at full throttle. Therefore, if running at full throttle, 5 gallons would last approximately 25 to 30 minutes. At lower speeds, fuel efficiency improves, potentially extending runtime significantly.
A ( 1996 ) Mercury Cougar gas tank capacity is ( 18.0 U.S. gallons )
20.0 gallons for Mercury Villagers '93-'98.
The ( 1996 ) Mercury Cougar gas tank capacity is ( 18.0 U.S. gallons )
11 us gallons
( 16 ) U.S. gallons
The ( 1996 ) Mercury Cougar gas tank capacity is ( 18.0 U.S. gallons )
typically the 1992 Mercury Sable can hold up to 16 gallons
According to the 2000 Mercury Mountaineer Owner Guide : ( the gas tank holds 21.0 U.S. gallons )
13 gallons
According to the 2000 Mercury Grand Marquis Owner Guide : ( The gas tank capacity is 19.0 U.S. gallons )
For a 2000 Mercury Cougar : The tank holds ( 15.4 US. gallons )
According to the 2004 Mercury Mountaineer Owner Guide : ( 22.5 U.S. gallons )