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Checked oil specs by engine

2015 Cadillac CTS oil capacity, type & filter

Multiple engine options are listed for the 2015 Cadillac CTS. Select your engine below before buying oil or a filter.

2015 Cadillac CTS oil specs by engine
Engine Capacity Oil Type Filter
2.0L 4-Cyl Turbo — 5W-30 Purolator L11403
3.6L V6 Turbo 6 qt 5W-30 Purolator L25274
6.2L V8 6 qt 5W-30 Purolator L12222

Match one of 3 checked engine options before buying oil or a filter.

2.0L 4-Cyl Turbo
Capacity Not confirmed Confirm the service-fill amount for this engine before adding oil.
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
Purolator Shown first L11403 Search L11403 CHAMP / LUBER-FINER PH10064 Search PH10064 AMSOIL EA15K50 Search EA15K50 AMSOIL EA15K01 Search EA15K01 AMSOIL EA15K02 Search EA15K02 AMSOIL EA15K03 Search EA15K03

Purolator L11403 is copied into the checkout checklist below. Other listed filters are source-backed alternatives.

3.6L V6 Turbo
Capacity 6 qt i Based on 3 checked sources: Pennzoil OATS, AMSOIL Lookup, and Castrol (Olyslager). Additional cross-check is still pending: capacity condition (service fill / with filter vs dry fill). Use it as a reference, then confirm the service-fill / with-filter amount before adding oil. See how we verify. Learn how we verify fitment
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
Purolator Shown first L25274 Search L25274 Purolator L22500 Search L22500 R84090 Search R84090 AMSOIL EA15K28 Search EA15K28 AMSOIL EA15K01 Search EA15K01 AMSOIL EA15K02 Search EA15K02 AMSOIL EA15K03 Search EA15K03 AMSOIL EA15K04 Search EA15K04

Purolator L25274 is copied into the checkout checklist below. Other listed filters are source-backed alternatives.

6.2L V8
Capacity 6 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 6 qt total; listed capacity is 6 qt.
Oil type 5W-30 i Based on 1 checked source: Pennzoil OATS. 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 OEM oil approval is not source-backed on this page; confirm the bottle or owner's manual before checkout.
Oil Filters Options cross-checked
Purolator Shown first L12222 Search L12222 CHAMP / LUBER-FINER PH48 Search PH48 AMSOIL EA15K50 Search EA15K50 AMSOIL EA15K01 Search EA15K01 AMSOIL EA15K02 Search EA15K02 AMSOIL EA15K03 Search EA15K03

Purolator L12222 is copied into the checkout checklist below. Other listed filters are source-backed alternatives.

5 sources checked Last checked: 2026-06-23 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.

2015 Cadillac CTS 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 2015 Cadillac CTS

Capacity sources

Supported by Pennzoil OATS, AMSOIL Lookup, and Castrol (Olyslager).

Oil type sources

Supported by Pennzoil OATS and Castrol (Olyslager).

Filter sources

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

Source coverage

5 checked source rows for the 2015 Cadillac CTS.

Before ordering for this 2015 Cadillac CTS

Checkout verification checklist
2.0L 4-Cyl Turbo Buy →
Capacity
Unverified
Oil type
5W-30
Interval
12 mo
Filter
Purolator L11403
3.6L V6 Turbo Buy →
Capacity
6 qt
Oil type
5W-30
Interval
12 mo
Filter
Purolator L25274
6.2L V8 Buy →
Capacity
6 qt
Oil type
5W-30
Filter
Purolator L12222

Source check: Last checked 2026-06-23 from AMSOIL Lookup, Pennzoil OATS, Purolator Part Finder, RockAuto, and Castrol (Olyslager).

Cadillac CTS oil specs by year

This table includes checked Cadillac CTS model years available in our database.

Year Capacity Oil type Filter
2019 6 qt (multiple engines) 5W-30 Purolator L11403
2018 6 qt (multiple engines) 5W-30 AMSOIL EA15K50
2017 6 qt (multiple engines) 5W-30 AMSOIL EA15K50
2016 7 qt (multiple engines) 5W-30 AMSOIL EA15K01
2015 Current page 6 qt (multiple engines) 5W-30 Purolator L11403
2014 6 qt (multiple engines) 5W-30 AMSOIL EA15K28
2013 6 qt (multiple engines) 5W-30 AMSOIL EA15K28
2012 6 qt (multiple engines) 5W-30 AMSOIL EA15K28
2011 6 qt (multiple engines) 5W-30 AMSOIL EA15K28
2010 6 qt (multiple engines) 5W-30 AMSOIL EA15K28
2009 6 qt (multiple engines) 5W-30 AMSOIL EA15K28
2008 6 qt 5W-30 AMSOIL EA15K28
2007 6 qt (multiple engines) 5W-30 AMSOIL EA15K28
2006 6 qt (multiple engines) 5W-30 AMSOIL EA15K28
2005 6 qt (multiple engines) 5W-30 AMSOIL EA15K28

How we verified 2015 Cadillac CTS oil data

How we verify fitment

Checked fitment data. Last checked: 2026-06-23.

This page checked 5 sources for the 2015 Cadillac CTS. 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: 3.6L V6 Turbo capacity and 6.2L V8 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
5
Last checked
2026-06-23
Field-level source support
  • Capacity: Pennzoil OATS, AMSOIL Lookup, and Castrol (Olyslager)
  • Oil type: Pennzoil OATS and Castrol (Olyslager)
  • Filter: Purolator Part Finder, RockAuto, and AMSOIL Lookup
  • Change interval: Pennzoil OATS and Castrol (Olyslager)
Source Supports Checked Link
AMSOIL Lookup Capacity, Filter 2026-06-23 Visit brand site
Pennzoil OATS Oil type, Capacity 2026-06-23 Visit brand site
Purolator Part Finder Filter 2026-06-23 Visit brand site
RockAuto Filter 2026-06-23 Checked source
Castrol (Olyslager) Capacity, Oil type 2026-06-23 Visit brand site

2015 Cadillac CTS 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.

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