Cadillac DTS (USA / CAN)

Additional Notes

• The Cadillac DTS 4.6 V8 cooling system holds 12.2 liters for the 2006 model year, while all subsequent model years from 2007 onward carry a slightly reduced capacity of 12 liters.
• A 12-liter cooling system capacity is a relatively large fill volume, consistent with the demands of a full-size V8-powered sedan where the engine block, cylinder heads, and heater core together account for significant coolant volume.
• Across all model years from 2006-2011, the normal-use coolant change interval is set at 240,000 km or 60 months, whichever comes first, reflecting the long-life characteristics of modern extended-service coolant formulations.
• For the 2006 model year under severe use conditions, the change interval is reduced to 125,000 km while retaining the same 60-month time limit, pairing with the 12.2-liter capacity specific to that year.
• From 2007-2010, severe use conditions bring the distance interval down to 120,000 km, a reduction of 5,000 km compared to the 2006 severe-use figure, while the 60-month time cap remains unchanged.
• The 2011 model year specifications include only a normal-use interval of 240,000 km or 60 months, with a 12-liter capacity consistent with the 2007-2010 entries.
• The 60-month time limit appears across every use condition and model year in the 2006-2011 range, meaning the calendar-based threshold can trigger a coolant change independently of distance accumulated.