Sylvania deployed to the 6th Fleet again from 28 December 1969 to 15 February 1970.
 She then began preparations for her first overhaul since commissioning.
 The ship was in drydock from 11 April to 13 May when she moored at the shipyard, and was ready for sea on 13 July.
 On 20 July the ship was awarded the Meritorious Unit Commendation for service to the 6th Fleet during the period 25 April 1965 to 30 September 1969.
 The next day, Admiral Elmo R. Zumwalt, Jr., Chief of Naval Operations, visited Sylvania.
 The period from 13 August to 11 September was spent in refresher training at Guantanamo Bay.

Sylvania stood out of Norfolk on 18 November 1970 to begin a six-month deployment in logistic support of the 6th Fleet and returned to Norfolk on 17 May 1971.
 In June, the ship entered the Norfolk Naval Shipyard for a four-month restricted availability period.

Sylvania left the yard on 4 October 1971 and, from 23–27 October, conducted a four-day port call at Fort Lauderdale, Florida.
 After two weeks of refresher training at Guantanamo Bay, she returned to Norfolk for another two-month availability period.
 The ship then commenced pre-deployment loadout and underway training in the Virginia Capes area until mid-February.
 Sylvania then deployed to the Mediterranean in support of the 6th Fleet from 24 February to 26 August 1972.
 After five weeks of re-loading supplies at Norfolk, the cargo ship returned to the Mediterranean, from 2 October to 10 November 1972, to replenish the AFS that was on station there.
 The remainder of the year 1972 and until 5 March 1973 was spent at Norfolk in upkeep and underway training.

Sylvania, sailed to Guantanamo Bay and held refresher training from 6–16 March 1973 and then paid a three-day visit to Cape Kennedy before returning to her home port on 23 March.
 She stood out of Norfolk on 25 May 1973 for another tour with the 6th Fleet and relieved Concord (AFS-5) as the on-station AFS on 16 June.
 She, in turn, was relieved by San Diego (AFS-6) on 12 November and returned to Norfolk on 3 December 1973.

Sylvania operated out of Norfolk until early September 1974 when she again deployed to the Mediterranean for duty with the 6th Fleet.

In September 1976, returning from a routine deployment, Sylvania had the honor of transporting the world-famous King Tutankhamun Exhibition to America for the Metropolitan Museum of Art in New York City.
Sylvania deployed to the 6th Fleet again from 28 December 1969 to 15 February 1970.  She then began preparations for her first overhaul since commissioning.  The ship was in drydock from 11 April to 13 May when she moored at the shipyard, and was ready for sea on 13 July.  On 20 July the ship was awarded the Meritorious Unit Commendation for service to the 6th Fleet during the period 25 April 1965 to 30 September 1969.  The next day, Admiral Elmo R. Zumwalt, Jr., Chief of Naval Operations, visited Sylvania.  The period from 13 August to 11 September was spent in refresher training at Guantanamo Bay.
Sylvania stood out of Norfolk on 18 November 1970 to begin a six-month deployment in logistic support of the 6th Fleet and returned to Norfolk on 17 May 1971.  In June, the ship entered the Norfolk Naval Shipyard for a four-month restricted availability period.
Sylvania left the yard on 4 October 1971 and, from 23–27 October, conducted a four-day port call at Fort Lauderdale, Florida.  After two weeks of refresher training at Guantanamo Bay, she returned to Norfolk for another two-month availability period.  The ship then commenced pre-deployment loadout and underway training in the Virginia Capes area until mid-February.  Sylvania then deployed to the Mediterranean in support of the 6th Fleet from 24 February to 26 August 1972.  After five weeks of re-loading supplies at Norfolk, the cargo ship returned to the Mediterranean, from 2 October to 10 November 1972, to replenish the AFS that was on station there.  The remainder of the year 1972 and until 5 March 1973 was spent at Norfolk in upkeep and underway training.
Sylvania, sailed to Guantanamo Bay and held refresher training from 6–16 March 1973 and then paid a three-day visit to Cape Kennedy before returning to her home port on 23 March.  She stood out of Norfolk on 25 May 1973 for another tour with the 6th Fleet and relieved Concord (AFS-5) as the on-station AFS on 16 June.  She, in turn, was relieved by San Diego (AFS-6) on 12 November and returned to Norfolk on 3 December 1973.
Sylvania operated out of Norfolk until early September 1974 when she again deployed to the Mediterranean for duty with the 6th Fleet.
In September 1976, returning from a routine deployment, Sylvania had the honor of transporting the world-famous King Tutankhamun Exhibition to America for the Metropolitan Museum of Art in New York City.
USS Sylvania (AFS-2)