Oil changes leave old oil

etyler88 · 12-23-2005, 11:13 AM

Check out this diagram on attached engine pisture. A large quanitity of oil is below the drain level and therefore is not removed at oil changes. The solution would be to use a oil suction device that is inserted down the dipstick tube. Can any one who has used an oil suction device testify to the amount of oil they have removed, is it significantly over four quarts or three and a half factoring in the filter?

keydiver · 12-23-2005, 01:25 PM

I don't see the drain on that picture. Where is it?

**efusco** · 12-23-2005, 01:29 PM

Quote:

Originally posted by etyler88@Dec 23 2005, 10:13 AM
Check out this diagram on attached engine pisture. A large quanitity of oil is below the drain level and therefore is not removed at oil changes. The solution would be to use a oil suction device that is inserted down the dipstick tube. Can any one who has used an oil suction device testify to the amount of oil they have removed, is it significantly over four quarts or three and a half factoring in the filter?

[snapback]178000[/snapback]

I agree with the above, how are you drawing your conclusions? the drain plug is not shown in this image. From memory the drain plug sits at approximately the lowest point on the oil pan and thus should remove nearly all the oil--discounting residual sticking to the walls/pan.

etyler88 · 12-23-2005, 01:38 PM

The drain plug appears to be on lower left, little yellow nub with a bolt head just below the yellow.

galaxee · 12-23-2005, 01:49 PM

that bolt you're pointing out looks more like a casing bolt to me. they don't put drainplugs there.

narf · 12-23-2005, 01:49 PM

Quote:

Originally posted by etyler88@Dec 23 2005, 11:38 AM
The drain plug appears to be on lower left, little yellow nub with a bolt head just below the yellow.

[snapback]178109[/snapback]

If I'm understanding you right, what you are refering to is one of the bolts holding the oil pan onto the bottom of the block. Also, the engine sits in the car rotated counter clockwise about 15 degrees from what is shown in the drawing. The bottom of the oil pan is parallel to the ground. Here's a corrected graphic[attachmentid=1537]

**efusco** · 12-23-2005, 02:04 PM

Quote:

Originally posted by narf@Dec 23 2005, 12:49 PM
If I'm understanding you right, what you are refering to is one of the bolts holding the oil pan onto the bottom of the block. Also, the engine sits in the car rotated counter clockwise about 15 degrees from what is shown in the drawing. The bottom of the oil pan is parallel to the ground.

[snapback]178122[/snapback]

Yup, that's a bolt to hold the oil pan on...there's one on the opposite side just like it. There's no drain plug shown. Go take a look under your car and note that the plug is, indeed, at a low point on the pan.

Frank Hudon · 12-23-2005, 02:05 PM

from the NCF manual a screen grab of the drain plug relationship to the oil pan bottom. notice the depression where the drain plug backup plate is, at most would hold maybe two table spoons of old oil.

etyler88 · 12-23-2005, 03:05 PM

OK thats good news, thanks.

glenk · 12-23-2005, 03:22 PM

If this ICE picture is to scale and the true "full" oil level/dipstick notches are pictured then I don't see how a bit higher oil level is going to affect mileage?

Look how much clearance there is from the top of the oil level and the crankshaft counter weights.

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12-23-2005, 11:13 AM	#1
etyler88 etyler88 Join Date: Mar 2005 Location: Dover, DE Posts: 448 My Car: 2005 Prius Package: #3 Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 1	Check out this diagram on attached engine pisture. A large quanitity of oil is below the drain level and therefore is not removed at oil changes. The solution would be to use a oil suction device that is inserted down the dipstick tube. Can any one who has used an oil suction device testify to the amount of oil they have removed, is it significantly over four quarts or three and a half factoring in the filter?

12-23-2005, 01:25 PM	#2
keydiver Senior Member Join Date: Sep 2005 Location: Hobe Sound, Florida Posts: 508 My Car: Package: Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	I don't see the drain on that picture. Where is it?

12-23-2005, 01:38 PM	#4
etyler88 etyler88 Join Date: Mar 2005 Location: Dover, DE Posts: 448 My Car: 2005 Prius Package: #3 Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 1	The drain plug appears to be on lower left, little yellow nub with a bolt head just below the yellow.

12-23-2005, 01:49 PM	#5
galaxee running WOT until out of fuel Join Date: Mar 2005 Location: central NC/ western WI Posts: 9,027 My Car: 2005 Prius Package: #5 Nominated 5 Times in 3 Posts TOTM Awards: 0 Friends: 20	that bolt you're pointing out looks more like a casing bolt to me. they don't put drainplugs there.

12-23-2005, 02:05 PM	#8
Frank Hudon Senior Member Join Date: Jan 2004 Posts: 4,144 My Car: Package: Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	from the NCF manual a screen grab of the drain plug relationship to the oil pan bottom. notice the depression where the drain plug backup plate is, at most would hold maybe two table spoons of old oil.

12-23-2005, 03:05 PM	#9
etyler88 etyler88 Join Date: Mar 2005 Location: Dover, DE Posts: 448 My Car: 2005 Prius Package: #3 Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 1	OK thats good news, thanks.

12-23-2005, 03:22 PM	#10
glenk Senior Member Join Date: Dec 2005 Location: Cupertino, CA Posts: 101 My Car: Package: Nominated 0 Times in 0 Posts TOTM Awards: 0 Friends: 0	If this ICE picture is to scale and the true "full" oil level/dipstick notches are pictured then I don't see how a bit higher oil level is going to affect mileage? Look how much clearance there is from the top of the oil level and the crankshaft counter weights.