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The Cadillac CTS is a luxury vehicle that comes in three body styles: sport sedan, coupe and sport wagon.
The engines of all three styles require the same type of synthetic oil.
2003 2004 2005 2006 2007 Cadillac CTS oil capacity
| Engine | Oil capacity / Filter capacity | Recommended oil type | Oil change interval |
| LY9 CTS 2.6 V6 | 4.8 l 5.07 US Quarts / Filter: n/a | 5W-30 | 12 months or every 10000 km or 6000 miles |
| LP1 CTS 2.8 V6 | 5.7 l 6.02 US Quarts / Filter: n/a | 5W-30 | 12 months or every 10000 km or 6000 miles |
| LA3 CTS 3.2 V6 | 4.8 l 5.07 US Quarts / Filter: n/a | 5W-30, 0W-30 | 12 months or every 10000 km or 6000 miles |
| LY7 CTS 3.6 V6 | 5.7 l 6.02 US Quarts / Filter: n/a | 5W-30, 0W-30 | 12 months or every 10000 km or 6000 miles |
| LS6 CTS-V 5.7 V8 | 6.2 l 6.55 US Quarts / Filter: n/a | 5W-30, 0W-30 | 12 months or every 10000 km or 6000 miles |
| LS2 CTS-V 6.0 V8 | 5.7 l 6.02 US Quarts / Filter: n/a | 5W-30, 0W-30 | 12 months or every 10000 km or 6000 miles |
2008 2009 2010 2011 2012 2013 Cadillac CTS oil capacity
| Engine | Oil capacity / Filter capacity | Recommended oil type | Oil change interval |
| LF1 CTS 3.0 V6 | 5.7 l 6.02 US Quarts / Filter: n/a | 5W-30, 0W-30 | 12 months or every 10000 km or 6000 miles |
| LY7 CTS 3.6 V6 | 5.7 l 6.02 US Quarts / Filter: n/a | 5W-30, 0W-30 | 12 months or every 10000 km or 6000 miles |
| LLT CTS 3.6 V6 | 5.7 l 6.02 US Quarts / Filter: n/a | 5W-30, 0W-30 | 12 months or every 10000 km or 6000 miles |
| LFX CTS 3.6 V6 | 5.7 l 6.02 US Quarts / Filter: n/a | 5W-30, 0W-30 | 12 months or every 10000 km or 6000 miles |
| LSA CTS-V 6.2 V8 | 5.7 l 6.02 US Quarts / Filter: n/a | 5W-30, 0W-30 | 12 months or every 10000 km or 6000 miles |
2014 2015 2016 2017 2018 2019 Cadillac CTS oil capacity
| Engine | Oil capacity / Filter capacity | Recommended oil type | Oil change interval |
| LTG Ecotec CTS 2.0 | 5.7 l 6.02 US Quarts / Filter: n/a | 5W-30, 0W-30 | 12 months or every 10000 km or 6000 miles |
| LGX CTS 3.6 V6 | 5.7 l 6.02 US Quarts / Filter: n/a | 5W-30, 0W-30 | 12 months or every 10000 km or 6000 miles |
| LFX CTS 3.6 V6 | 5.7 l 6.02 US Quarts / Filter: n/a | 5W-30, 0W-30 | 12 months or every 10000 km or 6000 miles |
| LF3 CTS 3.6 V6 Twin Turbo | 6.6 l 6.97 US Quarts / Filter: n/a | 5W-30, 0W-30 | 12 months or every 10000 km or 6000 miles |
| LT4 CTS-V 6.2 V8 | 9.5 l 10.04 US Quarts / Filter: n/a | 5W-30, 0W-30 | 12 months or every 10000 km or 6000 miles |
Check engine oil levels regularly. Unscrew and pull out the dipstick (look for a yellow loop handle), and examine it. Before checking the oil, shut off the engine and allow the vehicle to set for a few minutes to allow oil to drain into the oil pan.
The Cadillac Oil Life Monitor (OLM) system is not a simple oil quality sensor, but a software-based, algorithm-driven device that takes into account various operating conditions of the engine to determine when the oil needs changing.
Certain driving habits can affect the life of the oil, as well as driving conditions such as temperature and driving terrain. Lighter, more moderate driving conditions and temperature will require less frequent oil changes and maintenance, while more severe driving conditions will require more frequent oil changes and maintenance.
