From delivering up to 50 gallons of diesel at a time, mobile truck repair, road service trailer repair, mobile welder and fabricator, hydraulic systems repair, computer troubleshooting, exhaust issue expert, driveline repair, check engine light diagnostic, steering and suspension repairs, electrical expertise, and much more. If it's a diesel and runs, Mario can troubleshoot with a diagnostic test to fix it correctly at the most reasonable price. Mario works on Volvo, Navistar, John Deere, CAT, Cummins, Detroit, International, Mack, Allison, Eaton, Rockwell, Bendix, Call Mario at 956-533-9653 for all your truck and trailer road service needed throughout all of South Texas.