
The Lockheed C-5 Galaxy is one of the largest aircraft in the world and is used as a military transport aircraft. It has 12 internal wing tanks and is equipped for aerial refuelling. The C5 Corvette, on the other hand, has a fuel capacity of 16-18 gallons, depending on the model.
| Characteristics | Values |
|---|---|
| Aircraft type | Cargo aircraft |
| Manufacturer | Lockheed |
| Engine | TF39 turbofan engines (C-5); GE CF6 engines (C-5M) |
| Number of engines | 4 |
| Wing design | High-wing with 12 internal wing tanks |
| Fuel efficiency | Low |
| Fuel capacity | 18 gallons (as per owner's manual); 15.97 gallons (as per user experience) |
| Reserve fuel capacity | Approximately 2 gallons |
| Passenger capacity | 80 passengers and embarked loadmaster crew (C-5); 1,000 passengers (planned civilian version L-500) |
| Cargo capacity | One foot (30 cm) longer than the C-141 Starlifter |
| Payload capacity | 176,610 lb (80,110 kg) |
| Maximum takeoff weight | 649,680 lb (294,690 kg) |
| Aircraft size | One of the largest aircraft in the world |
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What You'll Learn

The C-5 Galaxy aircraft has 12 internal wing tanks
The C-5 Galaxy is one of the largest aircraft in the world and the largest airlifter in the Air Force inventory. The aircraft is designed to carry a fully equipped combat-ready military unit to any point in the world at short notice. The C-5 Galaxy aircraft has 12 internal wing tanks and is equipped for aerial refuelling. The aircraft's first version, the C-5A, was delivered to the Military Airlift Command of the US from 1969 to 1973.
The C-5 Galaxy is a high-wing cargo aircraft with a unique high T-tail fin (vertical) stabiliser. Four TF39 turbofan engines are mounted on pylons beneath its wings, which are swept 25 degrees. The TF39 engine, developed by General Electric, was selected in August 1965 for its revolutionary bypass ratio of eight-to-one, resulting in increased engine thrust and lower fuel consumption. Lockheed, the company that designed the C-5 Galaxy, also planned a civilian version called the L-500, with both passenger and cargo variants.
The C-5 Galaxy has undergone several improvements over the years. The C-5M, an upgraded version, broke 41 new records in 2009, demonstrating its exceptional performance capabilities. The aircraft set records for payload capacity, climbing ability, and altitude. However, the last TF39-powered C-5 flew in late 2017, marking the end of an era for this engine type.
The C-5 Galaxy has a distinctive design and capabilities that have contributed to its status as one of the largest aircraft in the world. Its 12 internal wing tanks, advanced engine technology, and aerial refuelling capabilities enable it to undertake long-distance missions and carry significant payloads. The aircraft has played a crucial role in military operations, showcasing its versatility and strategic importance.
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The CorvetteForum suggests the C5 has two 9-gallon tanks
The CorvetteForum suggests that the C5 has two 9-gallon tanks, with a total capacity of 18 gallons. However, some forum users have disputed this, stating that their owner's manuals indicate a fuel tank capacity of 18 gallons, while others mention a capacity of 18.5 gallons.
One user shared their experience of filling up their C5 tank when the "Reserve Fuel" was displayed on the DIC (driver information centre). Despite the owner's manual indicating an 18-gallon capacity, they were only able to fill up 15.97 gallons. This has led to confusion and speculation about the true fuel tank capacity and the role of the reserve fuel.
Another user with a Z06 model, which has a 16-gallon capacity according to the manual, shared their experience of driving 38 miles after the low fuel warning and then filling up 15.5 gallons of fuel. They also mentioned the challenge of the pump clicking off during fill-up, which some users attribute to the design of the gas tank.
Some forum users have suggested that the reserve fuel is a separate tank from the primary tank, but the exact capacity of this reserve tank remains unclear. It is speculated to be around 2 to 2.5 gallons, as most cars are designed to have a range of approximately 30-40 miles left when the reserve fuel warning is displayed.
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$662.99

The C5 has a reserve fuel capacity
The C5 has a fuel capacity of 18 gallons, according to the owner's manual. However, some users have reported discrepancies, filling up with 15.97 gallons of fuel when the "Reserve Fuel" warning was displayed on the DIC. This could be due to the design of the gas tank, which may include a reserve fuel capacity.
The C5 is a high-performance vehicle, and it is essential to understand its fuel capacity and range. While the owner's manual indicates an 18-gallon fuel capacity, it is important to note that the reserve fuel capacity is not specified. This reserve fuel allows for approximately 30-40 miles of additional range, which is a significant feature for long-distance trips or when facing unexpected delays.
The C5's fuel system is designed with two tanks, each with a capacity of approximately 9 gallons, for a total of 18 gallons. This dual-tank configuration is a unique aspect of the C5's design, intended to evenly distribute weight for optimal performance, especially during racing. The true capacity of the C5, including the reserve fuel, may be slightly higher than the indicated 18 gallons, but it is challenging to determine the exact amount without official specifications.
The reserve fuel capacity of the C5 is an important consideration for owners and enthusiasts. While the exact reserve fuel volume is not provided by the manufacturer, it is estimated to be around 2 to 2.5 gallons. This reserve fuel provides peace of mind and ensures that you can continue your journey even after the low fuel warning is triggered. It is always recommended to refuel as soon as possible when the reserve fuel warning is activated to avoid running out of fuel unexpectedly.
In conclusion, the C5 has a stated fuel capacity of 18 gallons, but the reserve fuel capacity adds to its overall range. The reserve fuel system is a valuable feature, providing additional miles of travel before refuelling is absolutely necessary. Understanding the C5's fuel capacity, including its reserve, is essential for owners and enthusiasts alike, ensuring a seamless driving experience and peace of mind on the road.
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The C5's fuel capacity is 18 gallons
The C5 has a fuel capacity of 18 gallons, according to the owner's manual. However, some users have reported difficulties in filling the tank beyond 15.97 gallons, leading to questions about the true capacity. The C5 is a high-performance vehicle, and its fuel system is designed for efficiency and optimal weight distribution.
The C5's fuel capacity is an important consideration for owners and operators. While the tank typically holds 18 gallons, as indicated in the owner's manual, there may be variations in the actual fuel capacity experienced by users. This could be due to a variety of factors, including the design of the gas tank, the fuel system, and the presence of a reserve fuel tank.
Some C5 owners have shared their experiences with filling up their tanks. In one instance, a user reported that their C5 displayed a "Reserve Fuel" warning on the DIC (Driver Information Center) when the tank was not yet full. Despite persistent efforts, they were only able to fill the tank to 15.97 gallons. This has sparked discussions among C5 enthusiasts about the true fuel capacity of the vehicle and the role of the reserve fuel.
The C5 is known for its performance and efficiency, and its fuel system is designed accordingly. The vehicle may have two tanks, each with a capacity of approximately 9 gallons, for a total of 18 gallons. This dual-tank design is intended to evenly distribute weight, enhancing the C5's performance, especially during racing or high-speed operations.
In conclusion, the C5's fuel capacity is specified as 18 gallons in the owner's manual. However, user experiences and technical considerations suggest that the actual fuel capacity may vary. The C5's performance and efficiency are closely tied to its fuel system, and understanding the true fuel capacity is essential for owners and enthusiasts alike.
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The C5M is a more efficient version of the C-5
The C-5 is a large, high-wing cargo aircraft with a cargo hold that is 121 ft (37 m) long, 13.5 ft (4.1 m) high, and 19 ft (5.8 m) wide. It is one of the largest aircraft in the world and the largest airlifter in the Air Force inventory. The C-5M Super Galaxy, on the other hand, is a modernized version of the legacy C-5, designed and manufactured by Lockheed Martin. It has a length of 75.53 m, a height of 19.84 m, and a wingspan of 67.91 m. The C-5M offers greater reliability and efficient performance at reduced operating and lifecycle costs. It integrates more than 70 enhancements and requires less maintenance per flight hour.
The C-5M Super Galaxy can carry more air-transportable cargo than the C-5. It can fly at a normal cruise speed of 0.77 Mach and has an unrefueled range of about 4,800 nm with 54,430 kg of cargo and 7,000 nm with no load. The C-5M is powered by four GE CF6-80C2 turbofan engines, each developing a thrust of 50,580 lb. The engines comply with Stage 4 noise and emission requirements and provide the aircraft with 22% more thrust and a 58% higher rate of climb than the C-5.
The C-5M Super Galaxy transport aircraft achieved initial operational capability (IOC) in February 2014. The aircraft set 89 world aeronautical records, including carrying a payload of 176,610 lb (80,110 kg) to over 41,100 ft (12,500 m) in 23 minutes, 59 seconds. The C-5M is operated by the US Air Force (USAF) and its primary mission is to transport cargo and personnel for the Department of Defense.
The USAF initiated a two-phase upgrade program to transform the C-5 aircraft fleet into the C-5M Super Galaxy. Under this program, Lockheed Martin modernized 52 C-5 aircraft, including 49 C-5Bs, two C-5Cs, and one C-5A by 2017. The first phase of the upgrade, which involved the avionics modernization program (AMP) and the reliability enhancement and re-engining program (RERP), secured a $454 million contract for Lockheed Martin in January 1999.
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Frequently asked questions
The fuel capacity of a C5 Corvette is approximately 18 gallons. The car has two fuel tanks, with a capacity of about 9 gallons each.
The C-5 Galaxy is one of the largest aircraft in the world. It has 12 internal wing fuel tanks and is equipped for aerial refueling. However, I could not find information on the total amount of fuel it can carry.
The reserve fuel capacity of a C5 Corvette is approximately 2 gallons.











































