In the United States and several other places, new laws say that regular diesel fuel must be low in sulfur. This gets rid of pollution, especially acid rain, but it also makes the fuel less slippery. Adding in biodiesel helps keep the fuel slippery and the engine running smoothly.
ɪ n ð ə WORD_BOUNDARY j uː n aɪ t ɪ d WORD_BOUNDARY s t eɪ t s WORD_BOUNDARY æ n d WORD_BOUNDARY s ɛ v ɹ ə l WORD_BOUNDARY ʌ ð ə ɹ WORD_BOUNDARY p l eɪ s ɪ z WORD_BOUNDARY n uː WORD_BOUNDARY l ɔ z WORD_BOUNDARY s eɪ WORD_BOUNDARY ð æ t WORD_BOUNDARY ɹ ɛ ɡ j ʊ l ə ɹ WORD_BOUNDARY d iː z ə l WORD_BOUNDARY f j uː ə l WORD_BOUNDARY m ʌ s t WORD_BOUNDARY b iː WORD_BOUNDARY l oʊ WORD_BOUNDARY ɪ n WORD_BOUNDARY s ʌ l f ɜː WORD_BOUNDARY ð ɪ s WORD_BOUNDARY ɡ ɛ t s WORD_BOUNDARY ɹ ɪ d WORD_BOUNDARY ʌ v WORD_BOUNDARY p ə l uː ʃ ə n WORD_BOUNDARY ɪ s p ɛ ʃ ə l i WORD_BOUNDARY æ s ɪ d WORD_BOUNDARY ɹ eɪ n WORD_BOUNDARY b ʌ t WORD_BOUNDARY ɪ t WORD_BOUNDARY ɔ l s oʊ WORD_BOUNDARY m eɪ k s WORD_BOUNDARY ð ə WORD_BOUNDARY f j uː ə l WORD_BOUNDARY l ɛ s WORD_BOUNDARY s l ɪ p ə ɹ ɹ i WORD_BOUNDARY æ d ɪ ŋ WORD_BOUNDARY ɪ n WORD_BOUNDARY b aɪ oʊ d iː z ə l WORD_BOUNDARY h ɛ l p s WORD_BOUNDARY k iː p WORD_BOUNDARY ð ə WORD_BOUNDARY f j uː ə l WORD_BOUNDARY s l ɪ p ə ɹ ɹ i WORD_BOUNDARY æ n d WORD_BOUNDARY ð ɪ WORD_BOUNDARY ɛ n d̠ʒ ɪ n WORD_BOUNDARY ɹ ʌ n ɪ ŋ WORD_BOUNDARY s m uː ð l i WORD_BOUNDARY