Mercury Grand Marquis Oil Type & Capacity
GarageDex's oil-spec data shows the Mercury Grand Marquis takes 5W-20 engine oil, about 6 qt with a filter change, on 2005-2011 models. That has been the factory spec across every year we cover.
Oil by model year
| Model years | Oil type | Capacity | Buy |
|---|---|---|---|
| 2005-2011 | 5W-20 | 6 qt | Shop 5W-20 |
Capacity is with a filter change and can vary by engine - open your exact year below for the per-engine figures and our sources. Shop links go to Amazon, and we may earn a commission at no extra cost to you.
Every Grand Marquis year
Frequently asked
What kind of oil does a Mercury Grand Marquis take?
GarageDex's oil-spec data shows the Mercury Grand Marquis takes 5W-20 engine oil, about 6 qt with a filter change, on 2005-2011 models. That has been the factory spec across every year we cover.
How many quarts of oil does a Mercury Grand Marquis take?
About 6 qt with a filter change on 2005-2011 models. Capacity varies by engine, so check your exact year for the per-engine figure - and finish on the dipstick rather than pouring in the full amount.
Does the oil type change by year on the Mercury Grand Marquis?
No - every year we cover uses 5W-20.
Sources. The oil grade and capacity for 7 of 7 model years is checked against a cited source, most often CarSpecFinder - Mercury Grand Marquis oil, AMSOIL lookup guide - 2011 Mercury Grand Marquis, 4.6L 8-cyl and AMSOIL lookup guide - 2010 Mercury Grand Marquis, 4.6L 8-cyl. Each year page lists its own sources.
Last verified 2026-09-23. Maintained by Matan B., who runs GarageDex. How we verify.