CAR SPEC SHEET

2026 Cadillac CT4 Oil type

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

  • LSY 2.0L L4 turbo engine 0W-20
  • L3B 2.7L L4 turbo and LF4 3.6L V6 twin turbo engines 5W-30
  • L3B 2.7L and LF4 3.6L engines, extreme cold below −29 °C (−20 °F) 0W-30

2026 Cadillac CT4 Owner's Manual, PDF page 295

SAE 0W-20 viscosity grade engine oilOpen the manual at this page ↗Added Oct 17, 2026 · Updated
See where it's printed

Oil type · LSY 2.0L L4 turbo engine · PDF page 295

SAE 0W-20 viscosity grade engine oil

Oil type · L3B 2.7L L4 turbo and LF4 3.6L V6 twin turbo engines · PDF page 295

twin turbo engines, use SAE 5W-30 viscosity

Oil type · L3B 2.7L and LF4 3.6L engines, extreme cold below −29 °C (−20 °F) · PDF page 295

an SAE 0W-30 oil may be used

See every quote (3 values)

All versions

3 values
Applies toValueManual saysPage
LSY 2.0L L4 turbo engine 0W-20 “SAE 0W-20 viscosity grade engine oil” PDF page 295 ↗
L3B 2.7L L4 turbo and LF4 3.6L V6 twin turbo engines 5W-30 “twin turbo engines, use SAE 5W-30 viscosity” PDF page 295 ↗
L3B 2.7L and LF4 3.6L engines, extreme cold below −29 °C (−20 °F) 0W-30 “an SAE 0W-30 oil may be used” PDF page 295 ↗

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Get the right part

Matches your manual0W-20 full synthetic motor oil

For LSY 2.0L L4 turbo engine

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Matches your manual5W-30 full synthetic motor oil

For L3B 2.7L L4 turbo and LF4 3.6L V6 twin turbo engines

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Matches your manual0W-30 full synthetic motor oil

For L3B 2.7L and LF4 3.6L engines, extreme cold below −29 °C (−20 °F)

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