The Americans continued supplying oil and gasoline to Germany almost until 1945.
Standard Oil of New Jersey (Exxon) directly sold $20 million worth of gasoline and lubricants to Germany. But that was just the direct transactions. In reality, the flow was much larger. From the company’s refineries in the Dutch Antilles, oil and gasoline were shipped to Spain. The entire Spanish tanker fleet, as well as American tankers, were involved in these deliveries. In just the first months of 1944, the Nazis received 48,000 tons of oil and petroleum products monthly from Spain.
How much fuel was shipped to the Germans via Portugal and Spain is unknown, but both countries exported several times more fuel throughout the war than they needed for their own consumption. Not all of it went to the Germans—Italy also used this supply route. Therefore, the often-repeated claim that Romania was Germany’s only source of oil is somewhat questionable.
Additionally, Standard Oil signed an agreement with Nazi Germany, committing to regular supplies of raw materials, fuel, and rubber to Germany and Italy. The owners of the corporation—the Rockefellers—managed to profit from both the Pentagon and the Reich, selling products to both sides. They essentially profited off the blood of American soldiers—but to them, it was just “business, nothing personal.”