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[GMCnet] How much oil is truely in the front of oil pan? [message #336699]

Mon, 03 September 2018 21:16

BobDunahugh

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Registered: October 2010
Location: Cedar Rapids, IA

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It seems to come up that it's a quart. Anyone really confirmed that to be true? I think that's high. I'm GUESSING that it's more like a pint. Bob Dunahugh
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Re: [GMCnet] How much oil is truely in the front of oil pan? [message #336700 is a reply to message #336699]

Mon, 03 September 2018 21:27

bdub

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Registered: February 2004
Location: Central Texas

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I guess the Cad 500 uses the same pan?
http://www.gmcmhphotos.com/photos/g6493-cad-500-oil-pan-capacity.html

-----Original Message-----
From: Gmclist On Behalf Of Bob Dunahugh
Sent: Monday, September 3, 2018 9:17 PM

It seems to come up that it's a quart. Anyone really confirmed that to be
true? I think that's high. I'm GUESSING that it's more like a pint

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bdub
'76 Palm Beach/Central Texas
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Re: [GMCnet] How much oil is truely in the front of oil pan? [message #336701 is a reply to message #336699]

Mon, 03 September 2018 21:34

James Hupy

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Registered: May 2010

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Somewhere in the past, someone in the GMC community installed a second
drain plug in the front of a motorhome pan, reason being that all the oil
could then be drained. If my memory serves, the amount drained was between
a pint and a quart. Huge discussion followed. No decision was reached if I
remember correctly.
Jim Hupy

On Mon, Sep 3, 2018, 7:17 PM Bob Dunahugh wrote:

> It seems to come up that it's a quart. Anyone really confirmed that to be
> true? I think that's high. I'm GUESSING that it's more like a pint. Bob
> Dunahugh
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> Unsubscribe or Change List Options:
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Re: [GMCnet] How much oil is truely in the front of oil pan? [message #336702 is a reply to message #336699]

Mon, 03 September 2018 21:48

JohnL455

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Registered: October 2006
Location: Woodstock, IL

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It depands.
If you add oil it goes there till it waterfalls to the rear
If you start the engine that will be slung by the crank and very little will be up there.
Your dipstick will now read more.

John Lebetski
Woodstock, IL
77 Eleganza II

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Re: [GMCnet] How much oil is truely in the front of oil pan? [message #336704 is a reply to message #336699]

Mon, 03 September 2018 21:57

pjburt

Messages: 436
Registered: February 2016
Location: Fresno, California

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Bob, this link just came up on the motor flush thread. it's the photo gallery documenting Ken H's test of oil pan capacity and dip stick calibration.
http://www.gmcmhphotos.com/photos/g3942-455-oil-pan-capacity.html

Jerry Burt Fresno, CA.
73 Gmc 26' Canyon Lands
Members: FMCA - GMCMI - GMCWS
A truly happy person is one who can enjoy the scenery on a detour.

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Re: [GMCnet] How much oil is truely in the front of oil pan? [message #336706 is a reply to message #336702]

Mon, 03 September 2018 22:02

pjburt

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Registered: February 2016
Location: Fresno, California

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JohnL455 wrote on Mon, 03 September 2018 19:48

It depands.
If you add oil it goes there till it waterfalls to the rear
If you start the engine that will be slung by the crank and very little will be up there.
Your dipstick will now read more.

Until you stop the engine and the oil drains back to the front of the pan from the lifter valley to timing chain housing oil return.

Jerry Burt Fresno, CA.
73 Gmc 26' Canyon Lands
Members: FMCA - GMCMI - GMCWS
A truly happy person is one who can enjoy the scenery on a detour.

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Re: [GMCnet] How much oil is truely in the front of oil pan? [message #336709 is a reply to message #336706]

Mon, 03 September 2018 23:01

jimk

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Registered: July 2006
Location: Belmont, CA

Karma: 9

Senior Member

Dick Patterson of Springfield at an engine semiar stated that in his test
on a pan (455), he varified 1 quart.
I have our guys raise the front in hopes to decrease the amount of oil up
front.
I feel it is more important tochange oil frequently.

On Mon, Sep 3, 2018 at 8:03 PM Jerry Burt wrote:

> JohnL455 wrote on Mon, 03 September 2018 19:48
>> It depands.
>> If you add oil it goes there till it waterfalls to the rear
>> If you start the engine that will be slung by the crank and very little
> will be up there.
>> Your dipstick will now read more.
>
> Until you stop the engine and the oil drains back to the front of the pan
> from the lifter valley to timing chain housing oil return.
>
> --
> Patti & Jerry Burt
> 73 Gmc 26' Canyon Lands -
> 77 Palm Beach
> Members: FMCA - GMCMI - GMCWS
>
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--
Jim Kanomata
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502

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Re: [GMCnet] How much oil is truely in the front of oil pan? [message #336713 is a reply to message #336699]

Tue, 04 September 2018 00:27

BobDunahugh

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Registered: October 2010
Location: Cedar Rapids, IA

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I've pulled 2 engines that I was extremely careful to not tip. During removal. Did pull the drain plug prior to removal. Then pulled the oil pan off to see how much oil that was at the front of the oil pan. Wasn't more then a fourth to a third of a pint. And nowhere near over flowing that front area. During driving. That recessed area is very close to the crank. So I think the high winds from the rotating crankshaft. Keep the oil out all the time. Then when the engine is stopped. Then oil flows down from above into the front recessed area. That front part is closer then some windage trays I've seen, or built. Bob Dunahugh

________________________________
From: Bob Dunahugh
Sent: Monday, September 3, 2018 9:16 PM
To: gmclist@list.gmcnet.org
Subject: How much oil is truely in the front of oil pan?

It seems to come up that it's a quart. Anyone really confirmed that to be true? I think that's high. I'm GUESSING that it's more like a pint. Bob Dunahugh
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Re: [GMCnet] How much oil is truely in the front of oil pan? [message #336715 is a reply to message #336713]

Tue, 04 September 2018 06:56

powwerjon

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Registered: March 2013

Karma: -2

Senior Member

All,

Have you reviewed Ken’s photo’s on the 455 Oil Pan Capacity? It does show that you could have almost a quart of oil in the front of the pan. I have an additional drain plug in the front of my oil pan. I admit that I have not measured the volume that comes out the plug in past oil changes, but I am going to change the oil and filter in the next week and will measure the amount that is drained out.

JR Wright
GMC Great Laker MHC
GMC Eastern States Charter Member
GMCGL Tech Editor
GMCMI
78 GMC Buskirk 30’ Stretch
1975 GMC Avion (Under Reconstruction)
Michigan

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Re: [GMCnet] How much oil is truely in the front of oil pan? [message #336742 is a reply to message #336699]

Tue, 04 September 2018 22:04

bwevers

Messages: 597
Registered: October 2010
Location: San Jose

Karma: 5

Senior Member

Some time ago I measured 3/4 Quart in the front of my oil pan with it level, this may vary.

http://www.gmcmhphotos.com/photos/data/6569/medium/Oil_Pan.jpg

Bill Wevers GMC49ers, GMC Western States 1975 Glenbrook - Manny Powerdrive, OneTon 455 F Block, G heads San Jose

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Re: [GMCnet] How much oil is truely in the front of oil pan? [message #336768 is a reply to message #336742]

Wed, 05 September 2018 18:05

Mr. Mike

Messages: 10
Registered: August 2010
Location: Livonia, Mi.

Karma: 0

Junior Member

The owners manual specification on oil capacity is 6 quarts, so if the information above says that there is possibility of 1 quart left in the upper pan do you just add 5 quart ????
If you add 6 quarts (which I normally do) per my oil change I actually have to much oil.
Any thought???

Mike

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Re: [GMCnet] How much oil is truely in the front of oil pan? [message #336784 is a reply to message #336768]

Thu, 06 September 2018 02:03

Ken Burton

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Registered: January 2004
Location: Hebron, Indiana

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Five is all I put in mine and it brings it right to the full line on the dipstick.

Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana

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Re: [GMCnet] How much oil is truely in the front of oil pan? [message #336791 is a reply to message #336784]

Thu, 06 September 2018 10:16

Matt Colie

Messages: 8547
Registered: March 2007
Location: S.E. Michigan

Karma: 7

Senior Member

Ken Burton wrote on Thu, 06 September 2018 03:03

Five is all I put in mine and it brings it right to the full line on the dipstick.

Mine is a '73 and when I put in 6 quarts, it does come up to the full mark, but that top quart is gone in 400+ miles. When left at add, I could go another 1500 before I was an half down.

Matt

Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit

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