Find the correct motor oil, gearbox oil, and other fluids for your vehicle. Get information on fill quantities, change intervals, and locate suppliers. Stay updated with product news and tips.





10+ similar apps compared and reviewed
Dayco is great, but it's not the only option. Explore 10+ similar apps for iPhone and iPad, each reviewed and rated by real users. Find free alternatives, premium upgrades, and hidden gems.





Find the correct motor oil, gearbox oil, and other fluids for your vehicle. Get information on fill quantities, change intervals, and locate suppliers. Stay updated with product news and tips.





Find the correct DENSO spark plug for your car by selecting your vehicle model. This app serves as a reference for car owners, mechanics, and sellers to identify suitable spark plug part numbers and their compatibility with various car brands.






This app guides users through bearing mounting with step-by-step instructions and visual aids. It allows for searching bearings by various criteria, tracking mounting history, and collaborating with maintenance teams. Users can also document procedures with checklists, notes, and photos, generating shareable PDF reports.


This app connects professional auto repairers and appraisers with a vast inventory of auto parts, including recycled, aftermarket, and OE surplus. It offers real-time delivery and inventory information, VIN decoding for accurate part identification, and detailed part images.


This app serves as a catalog for automatic transmissions, organized by vehicle. It helps mechanics identify transmission types and models, and often suggests the correct certified fluid for maintenance.


Access a comprehensive database of lubrication specifications for vehicles from the last 25 years. Find oil capacities, weights, drain plug torques, and fluid types for transmissions and transfer cases. Includes maintenance light reset instructions.


This app provides genuine service products and capabilities for Cummins equipment. It helps speed up repairs and improve customer uptime by offering fault code information, diagnostic tools, and repair guidance. It requires a Cummins datalink adapter for full functionality.


Access a comprehensive database for vehicle wheel and tire fitment information. Find OE and aftermarket options, including plus-minus sizing, for over 110 car makes and 3800+ models. Data is updated daily and covers vehicles manufactured since 2000 with nearly 100% accuracy.


This app provides professional-level vehicle diagnostics, including reading and clearing fault codes, accessing data streams, and performing special functions. It supports a wide range of car manufacturers and offers features like automatic VIN reading and report generation. Connect with other users in the community for support.


Connect your mobile device to a commercial vehicle's diagnostic port to monitor its health status. Understand fault codes, view vehicle specifications, and track trip data to improve uptime and aid in service and repair.