Abstract: An oil injector for a vehicle is provided. The oil injector includes a transparent body having a flowing hole formed on a front end of the body. A flexible tube member is connected to the body and corresponds to the flowing hole. A storing space is formed in an internal portion of the body. One end of a piston member is entered into the storing space, and the piston member is movable relative to the body. Therefore, the piston member provides a pushing function in the storing space so that a fluid flows into or out form the body via the tube member, and the transparent body is provided for observing a storing amount of the fluid in the body.

Abstract: An auxiliary device for vehicle maintenance including a pneumatic cylinder and a multi-mode control vale unit at least having a foot vale is provided. One end of a cylinder body and a first end of an axial rod of the pneumatic cylinder are to be coupled to a steering wheel and a brake pedal, respectively. The foot vale is connected between an inlet and outlet portions and selectively permits the inlet and outlet portions to be communicated pneumatically with each other. When the inlet and outlet portions are communicated pneumatically with each other, pressurized air goes into the cylinder body and drives the axial rod moving away from the cylinder body.

Abstract: An oil changing device for a transmission includes a tub body having a receiving space for receiving transmission oil, a main assembly having a base body, a manual set and a backflow valve, the base body mounted to the tub body, the base body having a main channel, a first passage and a backflow passage, the base body configured to connect with one end of an injection tube, another end of the injection tube connected to a transmission, the injection tube communicating with the main channel, the base body having a through hole opened therethrough, the through hole communicating with the main channel, the manual set having a second passage defined therein, the first passage connected between the main channel and the second passage, the backflow valve inserted into the through hole, and the backflow valve selectively closing or unclosing the backflow passage.

Abstract: A drain pan for vehicle axle is adapted for being positioned to a circular margin of a hub. The drain pan includes a front wall, a rear wall, a bottom connecting the front wall and the rear wall therebetween, two lateral walls connecting the front wall and the rear wall therebetween, two cambered walls connecting the bottom and the lateral walls therebetween, and at least one magnetic member. The magnetic member is disposed on an outer surface of the one of the cambered walls. Each cambered wall and the magnetic member contact the circular margin of the hub for positioning the drain pan onto the circular margin by magnetic force. Thereby, the drain pan can be positioned quickly, and the drain pan is able to be utilized on hubs in various sizes.