Oil
- Viscosity
- 0W-20
- Oil type
- Full Synthetic
- Capacity (with filter)
- 4.5 qt
- Capacity (without filter)
- 4.2 qt
OEM notes: dexos1 Gen 3
2021 Cadillac XT4 Maintenance & Specs
Everything you need to maintain your 2021 Cadillac XT4 — oil specs, maintenance schedule, recalls, and more.
The 2021 Cadillac XT4 takes 0W-20 Full Synthetic with a total capacity of 4.5 quarts (filter included). Note: this vehicle has 1 active recall — check the recalls section below. Below you’ll find complete maintenance specs, fluid capacities, parts, and links to buy what you need.
Data last verified: May 2, 2026
Oil
0W-20
Full Synthetic
Buy on Amazon →
Capacity
4.5 qt
with filter
OEM spec: dexos1 Gen 3
Quick DIY Tips for the 2021 Cadillac XT4
- Always use 0W-20 Full Synthetic as specified by Cadillac — using the wrong viscosity can void your powertrain warranty.
- Check the maintenance schedule below for your next service interval.
Filter options
No filter cross-references added yet.
Drain bolt & hardware
Drain bolt specs not yet added.
Fluid specifications
Parts & specifications
Spark Plugs
- Type
- Iridium
- Gap
- 0.040
- Quantity
- 4
- Change interval
- 100,000 mi
Battery
- Group size
- 48
- CCA
- 700
Tires
- Size
- 225/45R18
- Front pressure
- 33 PSI
- Rear pressure
- 33 PSI
Air Filter
Cabin Air Filter
Brake Pads
Wiper Blades
Maintenance schedule
Select a mileage interval above to see scheduled maintenance items.
Estimated Current Value
Original MSRP
$50,000
Private Party Value
$19,000 – $21,000
Dealer Retail Value
$22,000 – $25,000
Trade-In Value
$17,000 – $19,000
Depreciation
60%
Estimated values assume average condition and mileage for vehicle age.
Source: estimated
Safety recalls1
Technical Service Bulletins486
Torque specifications
- lug nut
- 100 ft-lbs / 135.6 Nm
- spark plug
- 18 ft-lbs / 24.4 Nm
14mm thread, aluminum head
Save by doing it yourself
A shop typically charges $90–$210 for this service. Buy the parts yourself and save.
Shop Parts for the Cadillac XT4
Find oil, filters, and maintenance parts for the 2021 Cadillac XT4 on Amazon.
Tools & supplies
Step-by-step guide
Detailed walkthrough with tips for first-timers.
Read guide →How often to change oil
Intervals, severe service, and what your car needs.
Read guide →Synthetic vs. conventional
Which oil type is right for your engine and budget.
Read guide →Have info for this vehicle?
Help fellow owners — submit specs from your owner's manual.
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