How much oil does my 3.8 liter Buick LeSabre require

My info says 5 quarts with filter. I don't know where the leak is coming from? My database isn't always correct, but, that's what it said.

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check your crankcase breather may need cleaned. so you get back pressure.

Should be about 4.
When you add 4, then park the car on a level surface, and wait about 15 minutes, and then check the level with the dipstick.
The low line and the full line are 1 quart apart.
Be blessed.

Hello
There are 4.5 qaurts of oil added to a 2000 buick if the filter is changed and almost everbody changes the filter
Chris

You will need 4 quarts of 10W30. just remember to check the level if you are changing the filter too. You usually need to add another half quart.

all vehicles use some oil between changes
oil is splashed up the side of the piston bore.the pistons have compression and oil rings.the oil rings are to scrape the oil back down as the piston moves down,if this wasnt done you would burn oil every stroke and loose a lot more
1 quart between changes is no big deal

Hello, this is the oil capacity of your vehicle.

I hope this info is helpfull

• with filter change

4.1 liters
4.3 quarts

• without filter change

3.75 liters
4.0 quarts

• 3.4L (LA1)

• with filter change

4.1 liters
4.3 quarts

• without filter change

3.75 liters
4.0 quarts

• 3.4L (LA1)

• with filter change

4.1 liters
4.3 quarts

• without filter change

3.75 liters
4.0 quarts

• 3.4L (LA1)

• with filter change

4.1 liters
4.3 quarts

• without filter change

3.75 liters
4.0 quarts

• 3.4L (LA1)

• with filter change

4.1 liters
4.3 quarts

• without filter change

3.75 liters
4.0 quarts

• with filter change

4.1 liters
4.3 quarts

• without filter change

3.75 liters
4.0 quarts
with filter 4.3 quarts

without oil filter 4 quarts

According to GM 1 quart per 1,500 miles is an acceptable oil consumption tolerance. 1 quart in 3k isn't bad.

I've had several gm 3.1 and 3.4 liters that have had there oil consumption issues remedied after the lower intake gaskets where replaced due to coolant leaking.

There are a couple of common problems that can cause oil consumption. Valve seals, bad rings, and PCV valves.

Valves seals would require a valve job which would requirethe removal of the heads. Rings would require a motor rebuild. Both of these are expensive options and oil is still pretty cheap.

Replacing the PCV valve might help. On the 3.8 it will be under the MAP sensor on the passenger side of the intake plenum.

As for as the intake gaskets, its a possibility but I don't have any hard evidence this could be the problem on a 3.8. Eventually the gaskets will start to leak oil. If you decide to replace them at that point I guess you will find out. I wouldn't do it on a hunch, its not a cheap repair.

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

No it's not have your engine check for oil leaks, also have then do a wet and dry cylinder compression test this will let you know if you are burning oil, also have them check the spark plug's.Hope this was helpful.