CAR SPEC SHEET

2020 Cadillac CT6 Oil type

Change year

Depends on your engine. Choose yours, or compare them here.

  • 3.6L V6 Engine 5W-30
  • 3.6L V6 Engine, extreme cold below −29 °C (−20 °F) 0W-30
  • 4.2L V8 Twin Turbo (LTA) Engine 0W-40

2020 Cadillac CT6 Owner's Manual, PDF page 280

Use SAE 5W-30 viscosity grade engineOpen the manual at this page ↗Added Oct 17, 2026 · Updated
See where it's printed

Oil type · 3.6L V6 Engine · PDF page 280

Use SAE 5W-30 viscosity grade engine

Oil type · 3.6L V6 Engine, extreme cold below −29 °C (−20 °F) · PDF page 280

(−20 °F), an SAE 0W-30 oil may be

Oil type · 4.2L V8 Twin Turbo (LTA) Engine · PDF page 280

Use SAE 0W-40 viscosity grade

See every quote (3 values)

All versions

3 values
Applies toValueManual saysPage
3.6L V6 Engine 5W-30 “Use SAE 5W-30 viscosity grade engine” PDF page 280 ↗
3.6L V6 Engine, extreme cold below −29 °C (−20 °F) 0W-30 “(−20 °F), an SAE 0W-30 oil may be” PDF page 280 ↗
4.2L V8 Twin Turbo (LTA) Engine 0W-40 “Use SAE 0W-40 viscosity grade” PDF page 280 ↗

Scroll the table to see the quote and page →

5W-30 full synthetic motor oil

For 3.6L V6 Engine

Shop on Amazon
0W-30 full synthetic motor oil

For 3.6L V6 Engine, extreme cold below −29 °C (−20 °F)

Shop on Amazon
0W-40 full synthetic motor oil

For 4.2L V8 Twin Turbo (LTA) Engine

Shop on Amazon

Search links. Check the listing matches your version.

Confirm with your own manual, dipstick or door-jamb label.
Report a problem with this page →