2023 Buick Encore GX 1.3L L3 Gas Engine (L3T) Oil Specifications

Viscosity

0W-20

OEM Approval

dexos1 (full synthetic)

Capacity

4.8 quarts

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Complete Oil Specifications

GM’s owner manual for the 2023 Buick Encore GX says to use full synthetic engine oil that meets the dexos1 specification. For the 1.3L L3 (L3T), use SAE 0W-20. Engine oil capacity is 4.5 L (4.8 qt) with the filter.

1.3L vs 1.2L: Different Oil

Engine Viscosity Oil with filter
1.3L L3 (L3T) SAE 0W-20 4.8 qt (4.5 L)
1.2L L3 (LIH) SAE 5W-30 (0W-30 in extreme cold) 4.2 qt (4.0 L)

Check which engine your Encore GX has before buying oil.

When to Change the Oil

The Engine Oil Life System decides when the oil needs changing. When CHANGE ENGINE OIL SOON appears, change it within the next 1 000 km (600 mi). GM also requires:

  • At least once a year: change the oil and filter.
  • After an accidental reset: change the oil at 5 000 km (3,000 mi) since the last change.

What We Couldn’t Confirm

  • Capacity without the filter, OEM filter part number and drain plug torque. None appear in the owner manual.

FAQs

What oil does a 2023 Buick Encore GX 1.3L take? Full synthetic SAE 0W-20 that meets the dexos1 specification.

How much oil does the 1.3L hold? 4.5 L (4.8 qt) with the filter.

How often should I change the oil? When the Engine Oil Life System calls for it, and at least once a year.

Primary source evidence

  1. General Motors LLC — 2023 Buick Encore GX Owner Manual (GMNA-Localizing-U.S./Canada/Mexico-16263917)

    US market · Model years 2023 · Published/version 2022-02-24 · Pages/tables: p. 257 (Selecting the Right Engine Oil: full synthetic dexos1, Viscosity Grade by engine), p. 258 (Engine Oil Life System), p. 323 (Maintenance schedule: oil and filter at least once a year), p. 332 (Capacities and Specifications: Engine Oil with Filter by engine), p. 333 (Engine Specifications: 1.3L L3 Gas Engine L3T, VIN code L)

    View official source · Accessed September 24, 2026

Evidence reviewed September 24, 2026.

Disclaimer: These specifications reflect the official documents and applicability shown above as of their access dates. Confirm the requirement against the manual for your VIN before performing maintenance.

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