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1987-1991 Parley with regards to your 1987 to 1991 Bonneville, Olds 88 or Buick Le Sabre Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 03-05-2005, 04:22 PM   #1
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Just talked to my dad, who just finished changing the oil.


Only two-point-something litres of oil came out of the car.


How did it become ~1+ litre down just like that? This can't be good... No blue smoke...



Ideas?
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Old 03-05-2005, 04:36 PM   #2
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Not seeing any puddles of oil on the ground?
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Old 03-05-2005, 05:22 PM   #3
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Lower intake gasket failure, perhaps? Check under your intake log.. you see any **** there? How about around the engine, anything? How many miles did you go on that oil change? Because cars usually burn oil, just miniscule amounts.. so if you went a good long while on one oil change, you could have burnt off 1 litre.


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Old 03-06-2005, 12:36 AM   #4
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Uhhh, your car actually takes more like 4 to 4.4 litres of oil. You lost at a minimum 1.4 up to 1.8. That is almost half the oil that is missing. It had to go somewhere.
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Old 03-06-2005, 11:06 AM   #5
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Quote:
Originally Posted by sse1990
Uhhh, your car actually takes more like 4 to 4.4 litres of oil. You lost at a minimum 1.4 up to 1.8. That is almost half the oil that is missing. It had to go somewhere.
Hmmm wow... Thats a weeeeeeeee bit toooo much for my liking.... I usually get out what I put in... With the exception of the filter... I'm just shocked...

Better find out where that oil is going before that 3800 lets you know its low on oil...

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Old 03-06-2005, 12:11 PM   #6
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More to the point, how often do you check the oil ? Any chance when it was last changed, they only put 4 quarts (3.8 liters) in ? How many miles since the last change ?

That said, Buick 3800s just do not seem to use much oil (compared to SBCs), mine use about one hole (five holes from full to add) per 1,000 miles/1,600 km. Is this about what others see ?

When changing oil, mine usually take about 4 1/2 quarts or a touch over 4 liters to fill and about 3 3/4 (3.5 liters) drain when changing (about 10 oz/330 ml is in filter which I fill before installing).

Maybe part of the problem is the difference between quarts and liters (3.8 liters = 4 quarts).

The angle a car is at when changing oil can also make a difference in how much comes out. How many quarts (do they use liter containers in Canada ?) of oil did he put in to get it to full ?

Sometimes I refer to the 3800 as a "one gallon" engine....
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Old 03-06-2005, 01:11 PM   #7
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Yes we use Litres in Canada. Usually my car takes 4 Litres to fill ( 4 liter = 4.2267528 quart ). While my Malibu takes 4.4L, and it seems that more and more new cars take the 4.4 Litres.
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Old 03-06-2005, 01:38 PM   #8
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Padgett,

Are you saying that your 3800'* seem to use a little bit of oil per 1000 miles?

On my 91 3800, For whatever the reason the oil level never changes... I had Mobil 1 in there for the better part of 9 or 10 months once and didn't use any oil..

My friend had a 200,000 Miles 3.0 LN7 in his Grand Am and it didn't use any oil either.. The low milage replacement motor does use 1 hole per 1000 miles... Same motor, but they act diffrent..

Now my 95 Is another story... I seem to go through 1.5 holes per 1000 miles, its always done that... The exact same goes for my cousins 60,000 mile 1995 SLE bonnie.. I have heard others say they their 3800 didn't use any...

My friend OTOH loves to build chevy V8'*... Its always amazes me when he'* done... After he rebuilds them they never use any oil, not even through the breakin process..

Maybe it has something to do with the person/* building the 3800'*... Some better some worse...lol

And I have seen oil change places fill up with the specified amount of oil... i.e. 3800 Vin C, 4 quarts... The the disclaimer in the chiltons... Bla Bla Bla, may need an additional quart when changing the filter... But I will say that 4.5 quarts seems to be the magic number for me

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Old 03-06-2005, 05:57 PM   #9
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Guess I'd be more accurate to say "I would be concerned about more than one hole per 1,000 miles" but do not always fill completely - if I have a part quart and it plus four others get me over halfway (three holes) probably will not bother about it, I do not overfill. Just looked at two that are about due and neither was covering the third hole (after sitting overnight). I usually change at 3,000 mile intervals.

Have had a very few cars that seemed to use no oil when new but none of mine have less than 50,000 miles on the clock. Have also had a few small block chevvies that did well to get 500 miles to a quart. No smoke or obvious leaks, just went "somewhere". At 250 miles per quart they foul plugs.
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Old 03-06-2005, 06:10 PM   #10
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Now that is interesting. I use 5 quarts every time. And it usually is only 3/4 of the way into the cross-hatched area. The oil filter uses about 1/2 quart, but before I used to fill it up before putting on a new one, I would always loose a few holes on the dipstick upon startup. So, 5 quarts everytime. My car is a poor example of how much oil she used, because I had an oil leak [it was VERY apparent it was the Lower Intake gaskets, they were riddled with oil passages in the gasket]. But I used about 1 quart /1000 miles towards the Summer when my mom gave me the car. She didn't burn a drop, never dropped any either. She'll be oil tight by the time I am done with her.. [sometime.. ].


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