From its humble beginning in 1939 to now, Arnold Oil Company is a locally owned and operated South Texas company. Our name says a lot about us, yes we are an Oil Company! Partnered with national brands such as Castrol, Chevron, Citgo, Service Pro, Mobil & Royal Purple offering great products at great prices. Not only do we sell oil and chemicals – we also sell a full line of Original Equipment (O.E.) and Aftermarket auto-motive parts such as ACDelco, Motorcraft and Mopar. Under-car or Under-hood, AOC’s 5 locations have you covered!