US STOCKS-Wall St falls as lower oil prices weigh on energy stocks
* Oil prices drop 2.7 percent; Exxon, Chevon drag down indexes
* ADP report: 177,000 jobs added in August vs est. 175,000
* Palo Alto drops after disappointing forecast
* Indexes down: Dow 0.34 pct, S&P 0.38 pct, Nasdaq 0.33 pct (Adds details, comments, updates prices)
By Mamidipudi Soumithri and Yashaswini Swamynathan
Aug 31 (Reuters) - Wall Street extended losses on Wednesday, the last trading day of August, as lower oil prices weighed on energy stocks.
Oil prices fell 2.5 percent after U.S. government data showed a large unexpected weekly build in U.S. crude and distillate stockpiles and a smaller-than-expected draw in gasoline.
Oil was also pressured by the dollar index, trading at a three-week high.
The S&P 500 energy index plunged 1.6 percent as Exxon Mobil and Chevron fell 1 percent. Exxon was the top drag on the S&P 500 and Chevron on the Dow. Continuación...