EXHIBIT 99.6 - PRESS RELEASE DATED FEBRUARY 5, 2007

               SOUTH TEXAS OIL RECEIVES $15 MILLION CREDIT LINE

Austin,  Texas  -  February 5, 2007 - South Texas Oil Company (OTCBB: STXX), an
independent energy company active in the acquisition, development and operation
of oil and gas properties with proven reserves, today announced the company has
received a $15 million revolving credit facility.

South Texas Oil Company's President, Murray Conradie stated, "We are pleased to
announce the company  has  secured  a  $15  million credit facility in order to
further our business strategy.  This credit facility  is a three year revolving
credit line with interest at prime plus 4 percent."

"We are extremely proud to announce this credit line as it shows the confidence
our lender has in our business plan and the company's strategy.  This line will
be used to accelerate our growth, as the company is currently  debt  free, cash
flow  positive and has approximately $1.3 million in existing working capital,"
concluded Murray Conradie.

ABOUT SOUTH TEXAS OIL COMPANY

South Texas  Oil  Company  was  formed  for  the purpose of the development and
operation of oil properties with proven reserves.  The  Company  currently  has
mineral  interests  in  25,244  acres  of  oil  and  gas  properties made up of
approximately 20,000 acres in Colorado, 3,605 acres in Frio  County,  Texas and
1,639 in Atascosa County, Texas.

Certain   statements   made  in  this  press  release  contain  forward-looking
statements that involve  a  number  of  risks  and uncertainties. This forward-
looking information is based on certain assumptions,  including,  among others,
presently  known physical data concerning size and character of reservoirs  and
economic  recoverability.   Some  of  these  expectations  may  be  based  upon
assumptions or judgments that  prove  to  be incorrect. In addition, operations
involve numerous risks and uncertainties, many  of which are beyond South Texas
Oil's  control,  which  could  result in expectations  not  being  realized  or
otherwise materially affect the  financial  condition, results of operation and
cash flows. Additional information regarding these and other risks is contained
in South Texas Oil's filings with the Securities and Exchange Commission.

Contact:

BPC Financial Marketing
John Baldissera
800-368-1217