According to Cadillac CTS/CTS-V Owner’s Manual, 2006 Cadillac CTS 2.8L 6-cyl can hold 6.0 qt (5.7 L) with Filter.
Blending all-American style with European-inspired handling, the Cadillac CTS has been a popular choice with luxury sedan consumers for more than a decade. Within that period, there have been three generations.
Despite shortcomings in terms of interior design and quality, the first CTS is still a fair choice for a used luxury sedan. The second-generation CTS, which featured substantial improvements to its interior, is a much more appealing car. The most recent generation of the CTS has grown in both size and sophistication, and we feel it's the first CTS to truly be on equal footing with its European and Japanese competition.
Tip! Find the owner's manual and instructional videos for current and previous year Cadillac vehicles at Cadillac.com.
Find the latest news on Cadillac on Twitter @Cadillac or visit their Facebook page.