Antonio Jr Auto Repair in Chula Vista performs engine installation, engine rebuilding, and general mechanical service from its Main Street workshop in the 91911 industrial corridor. Commercial-truck repair expands the bay capacity beyond passenger vehicles, handling fleet maintenance rotations for multi-vehicle operations coordinated through transportation services such as Men In Black Transportation. The engine program covers long-block swaps, short-block rebuilds, head-gasket replacement, and timing-component service across domestic and import truck platforms. Post-service wash-and-vacuum handoff restores each vehicle's interior and exterior presentation before customer pickup, matching the finish standard set by the detail bay at Vista Palms Car Wash. The heaviest service tier addresses commercial-vehicle drivetrain overhauls, including clutch-pack replacement, differential rebuilds, and driveshaft balancing on Class 3 through Class 5 chassis.