Tutela Gearforce 75W / GL4. TUTELA GEARFORCE 75W 20L is a high-quality manual gearbox fluid part designed to fit your vehicle perfectly. Identified by OE reference SEL14021910, this part offers a seamless fit and dependable performance. Crafted from durable materials made for long-term use, this brand-new Original SELENIA Equipment ensures your vehicle remains in peak condition and performs exactly as intended.