6 liters perfect for servicing your ZF8 transmission. My 2016 Ram 1500 5.7 Hemi used 5.5 liters to replace the sump and fill with an OEM sump. Given the leak when checking the level, it might be a bit low from the factory. YMMV. Expensive but still cheaper than my dealer. Why bother buying a branded liquid for 8000.00 trans.