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Checked oil specs by engine

2018 Chevrolet Sonic oil capacity, type & filter

The 2018 Chevrolet Sonic takes 4.2 qt of 5W-30 (1.4L 4-Cyl Turbo) and 4.8 qt of 0W-30 (1.8L 4-Cyl). Select your engine below before buying.

2018 Chevrolet Sonic oil specs by engine
Engine Capacity Oil Type Filter
1.4L 4-Cyl Turbo 4.2 qt 5W-30 AMSOIL EA15K35
1.8L 4-Cyl 4.8 qt 0W-30 AMSOIL EA15K35

Match one of 2 checked engine options before buying oil or a filter.

1.4L 4-Cyl Turbo
Capacity 4.2 qt i Capacity condition is not listed in the checked data, so confirm whether the service-fill amount includes a new filter before adding oil. See how we verify. Learn how we verify fitment Verified fit Buy at least 5 qt total; listed capacity is 4.2 qt.
Oil type 5W-30 OEM oil approval is not source-backed on this page; confirm the bottle or owner's manual before checkout. Verified fit
Oil Filters Options cross-checked
AMSOIL Shown first EA15K35 Search EA15K35 AMSOIL EA15K01 Search EA15K01 AMSOIL EA15K02 Search EA15K02 AMSOIL EA15K03 Search EA15K03 95109 Search 95109 Purolator L15839 Search L15839

AMSOIL EA15K35 is copied into the checkout checklist below. Other listed filters are source-backed alternatives.

1.8L 4-Cyl
Capacity 4.8 qt i Capacity condition is not listed in the checked data, so confirm whether the service-fill amount includes a new filter before adding oil. See how we verify. Learn how we verify fitment Verified fit Buy at least 5 qt total; listed capacity is 4.8 qt.
Oil type 0W-30 i Based on 1 checked source: AMSOIL Lookup. Additional cross-check is still pending: a second checked oil-type source and agreement across all checked oil-type sources. Use it as a reference, then confirm the viscosity grade for this engine before checkout. See how we verify. Learn how we verify fitment Below -29°C OEM oil approval is not source-backed on this page; confirm the bottle or owner's manual before checkout.
Oil Filters Options cross-checked
AMSOIL Shown first EA15K35 Search EA15K35 AMSOIL EA15K01 Search EA15K01 AMSOIL EA15K02 Search EA15K02 AMSOIL EA15K03 Search EA15K03 95109 Search 95109 Purolator L15839 Search L15839

AMSOIL EA15K35 is copied into the checkout checklist below. Other listed filters are source-backed alternatives.

7 sources checked Last checked: 2026-06-27 How we verify →

Where to Buy View Data Sources
Buy oil & filters:
Walmart → AutoZone → Amazon → O'Reilly →
Full synthetic options for 5W-30
Mobil 1 Extended Performance 5W-30 → Castrol Edge 5W-30 → Pennzoil Platinum 5W-30 →

Search paths only — confirm your OEM viscosity spec and quantity before checkout.

2018 Chevrolet Sonic oil specs: capacity conditions and filter notes

Which engine applies?

Check the door jamb sticker, owner's manual, or displacement badge on the engine cover. Match it to the engine options listed above before buying oil or a filter.

Filter part numbers

All listed filter part numbers are compatible alternatives for your vehicle. Choose any one brand, then confirm the exact part number at checkout.

Verify before checkout

Retailer fitment tools may use different data. Confirm oil capacity, viscosity, and filter part number before ordering.

Source coverage for the 2018 Chevrolet Sonic

Capacity sources

Supported by Pennzoil OATS, AMSOIL Lookup, Castrol (Olyslager), Valvoline Product Finder, and CarAraC Engine Oil.

Oil type sources

Supported by Pennzoil OATS, AMSOIL Lookup, Castrol (Olyslager), Valvoline Product Finder, and CarAraC Engine Oil.

Filter sources

Supported by RockAuto, Purolator Part Finder, and AMSOIL Lookup.

Source coverage

7 checked source rows for the 2018 Chevrolet Sonic.

Before ordering for this 2018 Chevrolet Sonic

Checkout verification checklist
1.4L 4-Cyl Turbo Verified fit Buy →
Capacity
4.2 qt
Oil type
5W-30
Filter
AMSOIL EA15K35
1.8L 4-Cyl Buy →
Capacity
4.8 qt
Oil type
0W-30 (Below -29°C)
Filter
AMSOIL EA15K35

Source check: Last checked 2026-06-27 from AMSOIL Lookup, Pennzoil OATS, RockAuto, Purolator Part Finder, Valvoline Product Finder, CarAraC Engine Oil, and Castrol (Olyslager).

Chevrolet Sonic oil specs by year

This table includes checked Chevrolet Sonic model years available in our database.

Year Capacity Oil type Filter
2020 4.2 qt (multiple engines) 5W-30 AMSOIL EA15K35
2019 4.2 qt (multiple engines) 5W-30 AMSOIL EA15K35
2018 Current page 4.2 qt (multiple engines) 5W-30 AMSOIL EA15K35
2017 4.2 qt (multiple engines) 5W-30 AMSOIL EA15K35
2016 4.2 qt (multiple engines) 5W-30 AMSOIL EA15K35
2015 4.2 qt (multiple engines) 5W-30 AMSOIL EA15K35
2014 4.2 qt (multiple engines) 5W-30 AMSOIL EA15K35
2013 4.2 qt (multiple engines) 5W-30 Purolator L15839
2012 4.2 qt (multiple engines) 5W-30 AMSOIL EA15K35

How we verified 2018 Chevrolet Sonic oil data

How we verify fitment

Checked fitment data. Last checked: 2026-06-27.

This page checked 7 sources for the 2018 Chevrolet Sonic. The table lists which checked source contributed capacity, oil type, or filter evidence.

We checked leading oil brands and aftermarket filter catalogs so you don't have to.

Confidence
Cross-check pending i Some oil fields are based on checked source data but still need stronger cross-check evidence. Review area: 1.8L 4-Cyl oil type. Use the listed values as references and confirm the exact engine before ordering or adding oil. See how we verify. Learn how we verify fitment
Sources checked
7
Last checked
2026-06-27
Field-level source support
  • Capacity: Pennzoil OATS, AMSOIL Lookup, Castrol (Olyslager), Valvoline Product Finder, and CarAraC Engine Oil
  • Oil type: Pennzoil OATS, AMSOIL Lookup, Castrol (Olyslager), Valvoline Product Finder, and CarAraC Engine Oil
  • Filter: RockAuto, Purolator Part Finder, and AMSOIL Lookup
Source Supports Checked Link
AMSOIL Lookup Capacity, Filter, Oil type 2026-06-27 Visit brand site
Pennzoil OATS Capacity, Oil type 2026-06-27 Visit brand site
RockAuto Filter 2026-06-27 Checked source
Purolator Part Finder Filter 2026-06-27 Visit brand site
Valvoline Product Finder Capacity, Oil type 2026-06-27 Checked source
CarAraC Engine Oil Capacity, Oil type 2026-06-27 Checked source
Castrol (Olyslager) Capacity, Oil type 2026-06-27 Visit brand site

2018 Chevrolet Sonic oil FAQ

Which engine configuration applies to my vehicle?

Use the door jamb sticker, owner's manual, or engine cover badge to identify your engine, then match it to the engine options listed above.

Is the oil capacity measured with or without the filter?

Capacity condition matters. With filter includes a new filter. Service fill is the typical drain-and-fill amount. Dry fill is for a fresh empty engine only.

Why should I confirm before buying?

Retailer catalogs can update separately. Confirm the exact 2018 Chevrolet Sonic selector at checkout before you buy.

Do I also need to match the OEM oil approval?

Yes. Viscosity is only one part of the oil spec. Match the oil approval listed in your owner's manual or on the bottle before checkout.

How often should I change the oil on a 2018 Chevrolet Sonic?

Use the oil-life monitor or the interval in your owner's manual for this engine. Severe service can require a shorter interval.

Do I need a new drain plug gasket?

Replace it when your vehicle uses a serviceable gasket or crush washer. Confirm the gasket size and drain plug torque from the service manual or parts counter.

2018 Chevrolet Sonic maintenance checklist

One part checked. Look up the rest while you're here.

Where to buy

These are retailer search paths for your vehicle. The specs above are checked — use the retailer's vehicle selector at checkout to confirm before ordering.

This section may include affiliate or sponsored retailer links. They are purchase paths, not fitment evidence.

Look up another vehicle

Find checked oil capacity, type, and filter data by exact year, make, and model.

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