On 13 January 1944, following a brief overhaul, she once more departed the west coast. This time, however, her destination was the Central Pacific. During the next five months, "Tallulah" shuttled oil and cargo from Pearl Harbor to the forward anchorage established at newly won Majuro Atoll. By early June, anchorages had also been established farther west at Kwajalein and Eniwetok. On 3 June, she departed Majuro and, after a stopover at Kwajalein from 4 to 13 June, arrived in Eniwetok on the 14th. The next day, she put to sea to fuel elements of the 5th Fleet just prior to the Philippine Sea phase of the Marianas campaign. During that battle, the carriers of Task Force 58 broke the back of Japanese sea-borne air power once and for all. Two days after the great air battle, she refueled TG 58.3, built around the two carriers, and . From 1 to 27 July, she conducted fueling operations in and around Eniwetok; then headed for the west coast.