A History of Short Words

From the New York Times Crossword Puzzle

STP

Tue, 26 Oct '21
Canful at a gas station
Wed, 20 Oct '21
Valvoline rival
Fri, 15 Oct '21
500 letters?
Thu, 8 Jul '21
Big speedway sponsor
Fri, 25 Jun '21
Garage brand
Mon, 19 Apr '21
Longtime advertiser at the Indy 500