The assessment that the statement is 'likely_true' is based on overwhelming and consistent evidence from multiple high-authority sources. The primary data sources for US oil prices, specifically West Texas Intermediate (WTI), directly support the claim. The Federal Reserve's (FRED) data chart and the US Energy Information Administration's (EIA) Weekly Petroleum Status Report are the definitive sources for WTI prices and provide the means for direct verification of a multi-month high.This conclusion is explicitly corroborated by secondary sources. A financial data provider, Trading Economics, directly states that WTI crude has reached levels not seen since late September. Similarly, an energy news outlet reports that crude benchmarks are at four-month highs. The timeframe of a 'four-month high' aligns perfectly with the claim's 'since late September' timeline.Further supporting evidence comes from data on Brent crude, the international benchmark. Although not the specific subject of the claim, sources show that Brent has also reached a four-month high, indicating a broad, consistent trend of rising global oil prices. There is no conflicting evidence among the relevant sources provided. Sources pertaining to natural gas were deemed irrelevant and were not considered in the assessment.