NASCAR additive crossword clue

Are you having trouble finding the answers to NASCAR additive clue of the Universal Crossword? Well your search ends here, because our team have found all the answers to today’s Universal crossword.
I must admit that this clue is not so easy. It took us some time to find the right answer to NASCAR additive. You already know the answers has 3 letters. If you still cannot find it, here it comes.

Clue: NASCAR additive
Answer: STP
Now you know the answer to NASCAR additive. It’s time to go back to find the answers to others clues on Universal January 18, 2019

Wrong answer?
Sometimes one clue can have more than one possible answer. For example, the clue “Wall Street order” can have 3 answers: SELL, PUT, BUY, PUTOPTION found on these crosswords: WSJ (Sept. 26, 2016), New York Times (Jun. 14, 2015), LA Times (Dec. 30, 2013) and Washington Post (Jan. 15, 2013)