Hyundai Genesis, DH (USA)

Additional Notes

• The Hyundai Genesis DH (USA) 3.8 GDI V6 cooling system holds 8.4 liters across all listed 2WD and 4WD configurations for 2014-2016, indicating a consistent system volume regardless of drivetrain layout.
• The 5.0 GDI V8 cooling system capacity is rated at 11.5 liters for 2014-2016, a notably larger volume than the V6 configurations, reflecting the greater thermal load and physical size of an eight-cylinder engine.
• Under normal use conditions, all configurations across both engine types carry a coolant change interval of 30,000 miles or 24 months, whichever comes first. Normal use intervals of this length are typical for conventional or low-silicate coolant formulations that degrade more readily over time and mileage.
• A separate first-change-only interval of 120,000 miles or 120 months applies to all listed configurations. A first-change-only designation means the extended interval governs solely the initial coolant replacement, after which subsequent changes revert to the standard normal-use schedule of 30,000 miles or 24 months.
• The 120-month time limit on the first-change-only interval equals ten years, a duration associated with long-life coolant formulations such as OAT (Organic Acid Technology) or HOAT (Hybrid OAT), which use organic corrosion inhibitors that deplete more slowly than conventional silicate-based additives.
• The 3.8 GDI V6 specifications appear under two overlapping year ranges, 2014-2015 and 2015-2016, for both 2WD and 4WD variants. The capacity and interval values are identical across both ranges, with 2015 appearing in both sets.
• The same overlapping year-range structure seen in the V6 entries also applies to the 5.0 GDI V8, where 2014-2015 and 2015-2016 entries share identical capacity and interval figures, with 2015 common to both ranges.