Cadillac XT5, C1XX (USA / CAN)

Additional Notes

• All AWD configurations listed across both the 2.0 and 3.6 V6 engines share an identical rear twin clutch differential fluid capacity of 0.75 liter, indicating a consistently compact unit across the Cadillac XT5 AWD lineup covered by these specifications.
• A 0.75 liter capacity is a relatively small fill volume, which is characteristic of a rear drive module or twin clutch rear differential rather than a traditional open differential, where fluid volumes tend to be larger.
• Under normal use conditions, the rear twin clutch differential fluid change interval is specified at 150,000 miles for all listed configurations, spanning both the 2.0 and 3.6 V6 AWD variants from 2018 onward.
• Under severe use conditions, the change interval is reduced to 75,000 miles across all listed configurations, exactly half the normal-use interval, reflecting the additional thermal and mechanical stress placed on twin clutch differential fluid in demanding operating environments.
• The 2.0 AWD and 3.6 V6 AWD configurations share identical capacity and interval figures for both normal and severe use, meaning engine displacement has no bearing on rear differential fluid service requirements in these specifications.
• Specifications for the 3.6 V6 AWD begin with the 2018 model year, while the 2.0 AWD entries start from 2019, establishing a one-year offset in the earliest covered model year between the two engine variants.
• Both the 2.0 AWD and 3.6 V6 AWD carry separate row entries starting from 2022, with fluid capacity and service intervals remaining unchanged from the preceding entries, confirming no revision to differential service specifications at that model year boundary.