Collection: Auto - Transmission Fluid

Guarantee smooth gear synchronization, optimize hydraulic line pressure inside your valve body, and lower internal operational temperatures under demanding towing stresses with our premium selection of Auto Transmission Fluid. At DIY Customs, we provide high-performance synthetic automatic transmission fluids (ATF), specialized continuously variable transmission (CVT) fluids, dual-clutch transmission (DCT) formulas, and heavy-duty manual gear lubricants designed for a perfect fit on independent import and domestic platforms. Whether you are seeking a specialized friction-modified ATF to eliminate severe clutch shudder on a hardworking utility truck, outfitting your shop bay for a comprehensive fluid pan service, or refreshing an older vehicle with premium high-mileage gear oil to protect internal components against extreme wear and heat breakdown, our professional-grade car audio and automotive maintenance supplies offer the lubrication stability you need at unbeatable prices. From raw layout maintenance accessories to factory-certified multi-vehicle fluid formulations, we carry the essential engineering items to extend your transmission's highway lifespan. Don't see your specific manufacturer fluid specification (like Dexron, Mercon, Type T-IV, or fluid profiles for German and Asian gearboxes)? Hit the live chat or call 412-882-8346—we can special order and drop-ship exactly what your vehicle requires directly to your doorstep!