Royce Groff Oil Castroville, TX Contact Information 515 US Highway 90 East , Castroville, TX, Texas 78009 (830) 931-2135 Location Get Directions By car By public transit Walking Bicycling HoursPlease call for hours Automotive Motor Oil Oil Filters 1 2 3 4 50.000 Does this listing contain inaccurate information? If so please send us a correction. Your name Your email Subject Please describe what corrections need to be made to the listing.