8-K

                                  UNITED STATES

                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                           ---------------------------

                                    FORM 8-K

                                 Current Report

                     Pursuant To Section 13 or 15(d) of the
                         Securities Exchange Act of 1934

                           ---------------------------


         Date of Report (Date of earliest event reported): May 31, 2006

                                  TENNECO INC.
               (Exact Name of Registrant as Specified in Charter)




            Delaware               1-12387               76-0515284
(State or other jurisdiction of  (Commission         (I.R.S. Employer of
 incorporation or organization)  File Number)  Incorporation Identification No.)



     500 NORTH FIELD DRIVE, LAKE FOREST, ILLINOIS             60045
       (Address of Principal Executive Offices)             (Zip Code)


       Registrant's telephone number, including area code: (847) 482-5000



Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of the
following provisions:

[ ]  Written communications pursuant to Rule 425 under the Securities Act
     (17 CFR 230.425)

[ ]  Soliciting material pursuant to Rule 14a-12 under the Exchange Act
     (17 CFR 240.14a-12)

[ ]  Pre-commencement communications pursuant to Rule 14d-2(b) under the
     Exchange Act (17 CFR 240.14d-2(b))

[ ]  Pre-commencement communications pursuant to Rule 13e-4(c) under the
     Exchange Act (17 CFR 240.13e-4(c))





ITEM 8.01    OTHER EVENTS

     On May 31, 2006, Tenneco Inc. announced that it is expanding its North
American emission control engineering center in Grass Lake, Michigan. The
expansion is described in more detail in the company's press release, dated May
31, 2006, which is filed as Exhibit 99.1 to this Current Report on Form 8-K and
incorporated herein by reference.

ITEM 9.01    FINANCIAL STATEMENTS AND EXHIBITS

Exhibit No.        Description
- -----------        -----------

99.1               Press release issued May 31, 2006



                                   SIGNATURES


     Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned hereunto duly authorized.


                                             TENNECO INC.


Date:  May 31, 2006                          By:  /s/ Timothy R. Donovan
                                                  ------------------------------
                                                  Timothy R. Donovan
                                                  Executive Vice President and
                                                  General Counsel

EX-99.1

                                                                    EXHIBIT 99.1

NEWS RELEASE                                                      [TENNECO LOGO]




        Contacts:      Jane Ostrander
                       Media Relations
                       847 482-5607
                       jostrander@tenneco.com

                       Leslie Hunziker
                       Investor Relations
                       847 482-5042
                       lhunziker@tenneco.com

        TENNECO EXPANDS NORTH AMERICAN EMISSION CONTROL TECHNICAL CENTER
          COMPANY INVESTS $13 MILLION TO SUPPORT VEHICLE MANUFACTURERS

Grass Lake, Michigan, May 31, 2006 - Tenneco (NYSE: TEN) announced today that
the company is expanding its North American emission control engineering center
in Grass Lake, Michigan. The company has invested $13 million to add 30,000 sq
ft to the current 110,000 sq ft facility. The expansion will accommodate
additional development and testing capabilities to meet the growing demand for
advanced emission control technologies.

"We are adding to our state-of-the art technical center in Grass Lake to enhance
our capabilities and to continue providing outstanding engineering services and
advanced products and technologies to our customers," said Mark P. Frissora,
chairman, CEO and president, Tenneco. "Stricter emission control standards and
the growth in the North American diesel market are driving the demand for more
emission control content on vehicles. This capital investment will help ensure
that Tenneco remains a leader in emission control engineering and advanced
technology development."

Tenneco's North American engineering center serves global OE manufacturers,
offering product design, development and testing at the Grass Lake facility. The
company's comprehensive engineering services include: program engineering;
design; after treatment and acoustical development; advanced technology, product
and manufacturing engineering; prototyping; testing; and metallurgical,
converter after treatment and warranty labs.

The expansion will enhance the company's sound engineering and emission control
capabilities with an upgraded sound quality lab, engine dynamometers and a NVH
evaluation lab. Later this year, the company will complete a flow lab, capable
of hot and cold conditions, which will be used in developing advanced after
treatment solutions. In addition, a new state of the art All Wheel Drive chassis
dynamometer was added that will enhance full vehicle acoustic development to
accommodate various drive trains, wheel bases and horse power ratings.

Increasingly stringent emissions regulations globally and growth in the diesel
engine market are driving demand for emission control components and systems. As
a result, Tenneco is capturing new business and leveraging its global
engineering capabilities into new geographical and vehicle markets.


                                     -More-



                                       -2-


As previously announced, the company will supply three North American OEMs with
advanced emission control technologies for light-duty diesel pick-up trucks,
beginning in 2007 and the company recently announced its first medium-duty
diesel after treatment contract in North America, which will also launch in
2007. The engineering and development work for these programs will be done at
the North American Technical Center in Grass Lake, Michigan.

 Tenneco is a $4.4 billion manufacturing company with headquarters in Lake
Forest, Illinois and approximately 19,000 employees worldwide. Tenneco is one of
the world's largest designers, manufacturers and marketers of emission control
and ride control products and systems for the automotive original equipment
market and the aftermarket. Tenneco markets its products principally under the
Monroe(R), Walker(R), Gillet(R) and Clevite(R)Elastomer brand names. Among its
products are Sensa-Trac(R) and Monroe Reflex(R) shocks and struts, Rancho(R)
shock absorbers, Walker(R) Quiet-Flow(R) mufflers, Dynomax(R) performance
exhaust products, and Clevite(R)Elastomer noise, vibration and harshness control
components.

This press release contains forward-looking statements. Words such as "will" and
similar expressions identify forward-looking statements. These forward-looking
statements are based on the current expectations of the company (including its
subsidiaries). Because these forward-looking statements involve risks and
uncertainties, the company's plans, actions and actual results could differ
materially. Among the factors that could cause these plans, actions and results
to differ materially from current expectations are: (i) changes in automotive
manufacturers' production rates and their actual and forecasted requirements for
the company's products and the company's resultant inability to realize the
sales represented by its awarded book of business; (ii) changes in consumer
demand and prices, including decreases in demand for automobiles which include
the company's products and the potential negative impact on the company's
revenues and margins from such products; (iii) the general regulatory,
political, economic and competitive conditions in markets where the company and
its subsidiaries operate; (iv) workforce factors such as strikes or labor
interruptions; and (v) the timing and occurrence (or non-occurrence) of
transactions and events which may be subject to circumstances beyond the control
of the company and its subsidiaries. These and other factors are described in
more detail in the company's filings with the Securities and Exchange
Commission, including in its Annual Report on Form 10-K. The company undertakes
no obligation to update any forward-looking statement to reflect events or
circumstances after the date of this press release.





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