oil capacities BUICK REGAL 2003 Owner's Manual

Turn off the engine and give the oil several minutes to
drain back into the oil pan. If you don’t, the oil
dipstick might not show the actual level.
Pull out the dipstick and clean it with a paper towel or
cloth, then push it back in all the way. Remove it again,
keeping the tip down, and check the level.
When to Add Engine Oil
If the oil is at or below the the cross-hatched area at the
tip of the dipstick, then you’ll need to add at least one
quart of oil. But you must use the right kind. This
part explains what kind of oil to use. For engine oil
crankcase capacity, seeCapacities and Specifications
on page 5-92.Notice:Don’t add too much oil. If your engine has
so much oil that the oil level gets above the
cross-hatched area that shows the proper operating
range, your engine could be damaged.
The engine oilfill cap is
located toward the front of
the engine near the
yellow-looped engine oil
dipstick handle. See
Engine Compartment
Overview on page 5-10for
more information on
location.
Be sure tofill it enough to put the level somewhere in
the proper operating range in the cross-hatched
area. Push the dipstick all the way back in when
you’re through.
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2003 - Regal OM

Capacities and Specications
Capacities and Specications
ApplicationCapacities
English Metric
Air Conditioning Refrigerant R134a 2.4 lbs 1.1 kg
Automatic Transaxle
Pan Removal and Replacement
After Complete Overhaul
When draining/replacing converter, morefluid will be needed.7.4 quarts
10.0 quarts7.0 L
9.5 L
Cooling System Including Reservoir 11.7 quarts 11.0 L
Engine Oil with Filter 4.5 quarts 4.3 L
Fuel Tank 17.0 gallons 64.0 L
Wheel Nut Torque 100 lb ft 140Y
All capacities are approximate. When adding, be sure tofill to the approximate level, as recommended in this
manual. SeePart D: Recommended Fluids and Lubricants on page 6-16.
Engine Specications
Engine VIN Code Displacement Firing Order
3800 V6
3800 Supercharged V6K
1231 CID 1–6–5–4–3–2
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2003 - Regal OM