1993 BUICK REGAL engine oil

properly disposing of your used oil, ask your dealer, a
service station or a local recycling center for help.
Air Cleaner
The air cleaner is in the right front area of the engine
compartment.
I A CAUTION:
Operating the engine with the air cleaner off can
cause you or others to be burned. The air cleaner
not only cleans the air,
it stops flame if the
engine backfires. If it isn’t there, and
the engine
backfires, you could be burned. Don’t drive with
it
off, and be careful working on the engine with
the air cleaner off.
I
Refer to the Maintenance Schedule to determine when
to replace the air filter.
See “Scheduled Maintenance Services’’ in the Index.
225
ProCarManuals.com

Automatic Transaxle Fluid
When to Check and Change:
A good time to check your automatic transaxle fluid
level is when
the engine oil is changed. Refer to the
Maintenance Schedule to determine when to change
your fluid. See “Scheduled Maintenance Services” in
the Index.
How to Check:
Because this operation can be a little difficult, you may
choose to have this done at a Buick dealership Service
Department.
If you do it yourself, be sure to follow all the
instructions here, or you could get a false reading on the
dipstick.
NOTICE:
Too much or too little fluid can damage your
transaxle.
Too much can mean that some of the
fluid could come out and fall
on hot engine parts,
starting a fire. Be sure to get an accurate reading
if you check your transaxle fluid.
Wait at least 30 minutes before checking the transaxle
fluid level if you have been driving:
When outside temperatures are above 90°F (32 ” C).
At high speed for quite a while.
0 In heavy traffic -- especially in hot weather.
0 While pulling a trailer.
To get the right reading, the fluid should be at normal
operating temperature, which is
180 F to 200 F (82 C
Get the vehicle warmed up by driving about 15 miles
(24 km) when outside temperatures are above
50°F
(10°C). If it’s colder than 50°F (lO°C), you may have
to drive longer.
To check the fluid level:
Park your vehicle on a level place.
0 Place the shift lever in “F’ (Park) with the parking
0 With your foot on the brake pedal, move the shift
to
93
O C).
brake applied.
lever through each gear range, pausing for about
three seconds
in each range. Then, position the shift
lever
in “P” (Park).
0 Let the engine run at idle for three to five minutes.
226
ProCarManuals.com

If the fluid level is low, add only enough of the proper
fluid to bring the level into the cross-hatched area on the
dipstick. It doesn’t take much fluid, generally less than a
pint. Don’t overfill. We recommend you use only fluid
labeled DEXRONB-IIE, because fluids with that label
are made especially for your automatic transaxle.
Damage caused by fluid other than DEXRONB-IIE is
not covered by your new vehicle warranty.
After adding fluid, recheck the fluid level as
described under “How
to Check.”
When the correct fluid level is obtained, push the
dipstick back in all the way.
Engine Coolant
The following explains your cooling system and how to
add coolant when
it is low. If you have a problem with
engine overheat.ing or if you need to add coolant to your
radiator, see “Engine Overheating”
in the Index.
The proper coolant for your Buick will:
0 Give freezing protection down to -34OF (-37OC) .
0 Give boiling protection up to 262 OF (128 “C) .
Protect against rust and corrosion.
0 Help keep the proper engine temperature.
0 Let the warning lights work as they should.
What to Use:
Use a mixture of one-half clean water (preferably
distilled) and one-half antifreeze that meets
“GM
Specification 1825-M,” which won’t damage aluminum
parts. You can also use a recycled coolant conforming to
GM Specification 1825-M with a complete coolant flush
and refill. Use GM Engine Coolant Supplement (sealer)
with any complete coolant change. If you use these, you
don’t need to add anything else.
can be aangerous. Plain water, or some other
liquid like alcohol, can boil before the proper
coolant mix will. Your vehicle’s coolant warning
system is set for the proper coolant mix. With
plain water or the wrong mix, your engine could
get too hot but you wouldn’t get the overhe-”
warning. Your engine could catch fire and
yuu or
others could be burned. Use a 50/50 mix of clean
water and a proper antifreeze.
G:~Z.+T~:, p:.t+d+s
228
ProCarManuals.com

won’t work at all. So, it isn’t a good idea to “top off’
your brake fluid. Adding brake fluid won’t correct a
leak.
If you add fluid when your linings are worn, then
you’ll have too much fluid when you get new brake
linings. You should add (or remove) brake fluid,
as
necessary, only when work is done on the brake
hydraulic system.
a LAUTION:
1
If you have too much brake flui,, I. ;an sblll orl
the engine. The fluid will burn if the engine is hot
enough. You or others could be burned, and your
vehicle could be damaged. Add brake fluid only
when work is done on the brake hydraulic
-stem.
When your brake fluid falls to a low level, your brake
warning light will come on. See “Brake System Warning
Light” in the Index.
What to Add:
When you do need brake fluid, use only DOT-3 brake
fluid
-- such as Delco Supreme 11 @ (GM Part
N0.1052535). Use new brake fluid from a sealed
container only.
0
0
DOT-5 silicone brake fluid can damage
your vehicle. Don’t use it.
Don’t let someone put
in the wrong kind of
fluid. For example, just a few drops of
mineral-based oil, such as engine oil,
in
your brake system can damage brake
system parts
so badly that they’ll have to
be replaced.
Brake fluid can damage paint,
so be careful
not to spill brake fluid on your vehicle.
Replacing Brake System Parts
The braking system on a modern vehicle is complex. Its
many parts have to be
of top quality and work well
together if the vehicle is to have really good braking.
Vehicles we design and test have top-quality GM brake
parts in them, as your Buick does when
it is new. When
you replace parts of your braking system
-- for example,
when your brake linings wear down and
you have to
have new ones put in
-- be sure you get new genuine
GM replacement parts. If
you don’t, your brakes may no
longer work properly. For example, if someone puts
in
brake linings that are wrong for your vehicle, the
234
ProCarManuals.com

Capacities and Specifications
Engine Code L1 (L27)2 3.8L V-6 SF1
Belt Tensions - Fuel Tank Capacity -
Automatically controlled by an idler pulley.
16.5 gallons/62.7 liters
Tension adjustment should never be necessary.
Transaxle -
Automatic Overdrive - Drain & Refill -
6 quarts/5.7 liters
Maintenance Item Part Numbers3 -
Air Filter - A925C
Fuel Filter
- GF579
Oil Filter
- PF47
PCV Valve
- CV892C
Radiator Cap
- RC27
Spark Plug
- 41-600, GAP 0.060”
Cooling System Capacity -
11.1 quarts/l0.5 liters
Crankcase Capacity -
Oil change with filter change -
4 quarts/3.8 liters
Air Conditioning Capacity4 -
(R12) - 2.25 lbs. (1.02 kilograms)
-
4 Air Conditioning Refrigerant - Not all air conditioning refrigerants are the same. If the air conditioning system in your
vehicle needs refrigerant, be sure the proper refrigerant
is used. If you’re not sure ask your Buick dealer.
~ ~~
I 8th Character of the Vehicle Identification Number.
2 Made in a GM plant in the United States.
3 Part numbers are AC tvDe.
263
ProCarManuals.com

Capacities and Specifications
Engine Code T1 (LH0)2 3.1L V-6 MFI
Belt Tensions -
Automatically controlled by an idler pulley.
Tension adjustment should never be necessary.
Cooling System Capacity -
11.9 quarts/l2.6 liters
Crankcase Capacity -
Oil change with filter change -
4 quarts/3.8 liters
Air Conditioning Capacity4 -
(R12) - 2.25 Ibs. (1.02 kilograms)
Fuel Tank Capacity -
16.5 gallons/62.7 liters
1 ransaxle -
Automatic Overdrive - Drain & Refil 1-
6 quartd5.7 liters
Maintenance Item Part Numbers3 -
Air Filter - A1 129C
Fuel Filter
- GF48 1
Oil Filter - PF5 1
PCV Valve - CV892C
Radiator Cap
- RC27
Spark Plug
- R44LTSM, GAP 0.045”
~~ ~
1 8th Character of the Vehicle Identification Number.
z Made in a GM plant in the United States.
3 Part numbers are AC type.
4 Air Conditioning Refrigerant - Not all air conditioning refrigerants are the same. If the air conditioning system in your
vehicle needs refrig
nt, be sure the proper refrigerant is used. If you’re not sure ask your Buick dealer.
264
ProCarManuals.com

IMPORTANT:
KEEP ENGINE OIL
AT THE PROPER
LEVEL AND CHANGE AI
RECOMMENDED
’/an
Have you purchased the GM Protection Plan? The
Plan supplements your new vehicle warranties. See
your Buick dealer for details.
Introduction
A Word About Maintenance
We at General Motors want to help you keep your
vehicle in good working condition. But we don’t know
exactly how
you’ll drive it. You may drive very short
distances only
a few times a week. Or you may drive
long distances all the time in very
hot, dusty weather.
You may use your vehicle in making deliveries. Or you
may drive it to work, to
do errands or in many other
ways.
Because of all
the different ways people use their GM
vehicles, maintenance needs vary. You may even need
more frequent checks and replacements
than you will
find in the schedules in this part.
So please read this part
and note how
you drive. If you have any questions on
how
to keep your vehicle in good condition, see your
Buick dealer, the place many GM owners choose to
have their maintenance work done. Your dealer can be
relied upon to use proper parts and practices.
266
-
ProCarManuals.com

Scheduled Maintenance Services Schedule I
Follow Schedule I if your car is MAINLY driven under one or more of the following conditions: I
0 When most trips are less than 4 miles (6 kilometers).
0 When most trips are less than 10 miles (16 kilometers) and outside temperatures remain below freezing.
0 When most trips include extended idling and/or frequent low-speed operation as in stop-and-go traffic.
0 Towing a trailer.*?
When operating in dusty areas.
Schedule I should also be followed if the car is used for delivery service, police, taxi or other commercial applications.
TO BE SERVICED
(See Explanation of
Scheduled Maintenance
Services Following Schedules
I and 11)
Item No.
1. Engine Oil & Oil Filter
Change*
2. Chassis Lubrication
3. Throttle Body Mounting Bolt Torque*
4. Tire & Wheel Inspection &
Rotation
5. Engine Accessory Drive
' Belt(s) Inspection*
6. Cooling System Service*
65 70 75 80
0.00
0 0
270
ProCarManuals.com