What oil should I wear to the rear axle?
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From: Sweden ,Gothenburg
What oil should I use to the rear axle?
Just thought I should change the oil in the rear axle. What should I wear for oil and oil capacity? It is bolted 12 Thanks Swede
Last edited by Swede98; May 12, 2011 at 11:27 AM.
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Joined: Jul 2006
Posts: 1,826
From: Richfield, Oh
oil
ANY Hypoid gear oil 80-90 85-140
POSI or NON posi all mineral base oil is fine
POSI only needs the limited slip additive IF YOU HAVE the option in your rear.
OIL will all be the same
If you have a OPEN - NON POSI you can use synthetic oil
If you have a FActory POSI clutch or cone style...NO SYNTHETIC.
about 2.5 quarts of oil maybe 2 litres..??
Jim
POSI or NON posi all mineral base oil is fine
POSI only needs the limited slip additive IF YOU HAVE the option in your rear.
OIL will all be the same
If you have a OPEN - NON POSI you can use synthetic oil
If you have a FActory POSI clutch or cone style...NO SYNTHETIC.
about 2.5 quarts of oil maybe 2 litres..??
Jim
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Joined: Mar 2011
Posts: 286
From: Delaware
I was going to ask this exact question.
I've got a 10-bolt open rear on my 71 and I am really interested in keeping the differential in good condition...
Should I be looking for a specific brand or will any major brand work? How often should the oil be getting changed?
I've got a 10-bolt open rear on my 71 and I am really interested in keeping the differential in good condition...
Should I be looking for a specific brand or will any major brand work? How often should the oil be getting changed?
Thread Starter
Registered User
Joined: Mar 2011
Posts: 37
From: Sweden ,Gothenburg
I will try to use my school english thanks Jerry
Thread Starter
Registered User
Joined: Mar 2011
Posts: 37
From: Sweden ,Gothenburg
ANY Hypoid gear oil 80-90 85-140
POSI or NON posi all mineral base oil is fine
POSI only needs the limited slip additive IF YOU HAVE the option in your rear.
OIL will all be the same
If you have a OPEN - NON POSI you can use synthetic oil
If you have a FActory POSI clutch or cone style...NO SYNTHETIC.
about 2.5 quarts of oil maybe 2 litres..?? Jim
POSI or NON posi all mineral base oil is fine
POSI only needs the limited slip additive IF YOU HAVE the option in your rear.
OIL will all be the same
If you have a OPEN - NON POSI you can use synthetic oil
If you have a FActory POSI clutch or cone style...NO SYNTHETIC.
about 2.5 quarts of oil maybe 2 litres..??
Jim
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Joined: Feb 2008
Posts: 11,798
From: Plano, TX
After removing the cover and draining the oil, one could tell what kind it is by looking at it. Maybe post a picture of the innards here.
Then you could go get the correct oil.
When refilling, add oil throught the fill plug hole until it is full and oil starts to come out the fill hole. Wait a while (half hour or so?) and recheck it. Sometimes it takes a while for the oil to go into all the places it should. Made that fast fill-n-go mistake before and shorted the axle a quart or so.
No problem with your English - you speak Swedish much better than me. I only know "hej!"
However I do often wear lots of oil after working on the axle...
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Joined: Mar 2011
Posts: 37
From: Sweden ,Gothenburg
Do you have a tag on the axle housing? If so what are the numbers?
After removing the cover and draining the oil, one could tell what kind it is by looking at it. Maybe post a picture of the innards here.
Then you could go get the correct oil.
When refilling, add oil throught the fill plug hole until it is full and oil starts to come out the fill hole. Wait a while (half hour or so?) and recheck it. Sometimes it takes a while for the oil to go into all the places it should. Made that fast fill-n-go mistake before and shorted the axle a quart or so.
No problem with your English - you speak Swedish much better than me. I only know "hej!"
However I do often wear lots of oil after working on the axle...
After removing the cover and draining the oil, one could tell what kind it is by looking at it. Maybe post a picture of the innards here.
Then you could go get the correct oil.
When refilling, add oil throught the fill plug hole until it is full and oil starts to come out the fill hole. Wait a while (half hour or so?) and recheck it. Sometimes it takes a while for the oil to go into all the places it should. Made that fast fill-n-go mistake before and shorted the axle a quart or so.
No problem with your English - you speak Swedish much better than me. I only know "hej!"
However I do often wear lots of oil after working on the axle...
thank you very much (tack så mycket)us car (Jänkare)Now you have learned some more words
Thank you Jerry
Last edited by Swede98; May 12, 2011 at 12:37 PM.
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Joined: Feb 2008
Posts: 11,798
From: Plano, TX
Here is a good way to find out if you have standard or limited slip:
With car in N and park brake off, jack up the rear so both sides are off the ground a little. (Block front wheels first). Now, turn one of the wheels. If both wheels turn in the same direction, then it is limited slip. If they turn in opposite directions, then it is a standard unit.
As for the Swedish, I would have to hear the words to say them. Also, my keyboard does not make those funky characters.
When i was in Sweden a few years ago, a cute lady stopped to talk with me with a big smile. I look Swedish enough to fool her. Too bad I could not have understood what she said!
I understood a bit more Swedish 12 years ago when i worked at Ericsson.
Thread Starter
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Joined: Mar 2011
Posts: 37
From: Sweden ,Gothenburg
Sorry - I am not sure about the numbering.
Here is a good way to find out if you have standard or limited slip:
With car in N and park brake off, jack up the rear so both sides are off the ground a little. (Block front wheels first). Now, turn one of the wheels. If both wheels turn in the same direction, then it is limited slip. If they turn in opposite directions, then it is a standard unit.
As for the Swedish, I would have to hear the words to say them. Also, my keyboard does not make those funky characters.
When i was in Sweden a few years ago, a cute lady stopped to talk with me with a big smile. I look Swedish enough to fool her. Too bad I could not have understood what she said!
I understood a bit more Swedish 12 years ago when i worked at Ericsson.
Here is a good way to find out if you have standard or limited slip:
With car in N and park brake off, jack up the rear so both sides are off the ground a little. (Block front wheels first). Now, turn one of the wheels. If both wheels turn in the same direction, then it is limited slip. If they turn in opposite directions, then it is a standard unit.
As for the Swedish, I would have to hear the words to say them. Also, my keyboard does not make those funky characters.
When i was in Sweden a few years ago, a cute lady stopped to talk with me with a big smile. I look Swedish enough to fool her. Too bad I could not have understood what she said!
I understood a bit more Swedish 12 years ago when i worked at Ericsson.
Tack så mycket Jerry
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Joined: Jun 2003
Posts: 1,226
From: Southeast Michigan
Hi Rob I shall get me a gasket .The reason why I want to change oil is then I have drive some miles it feels like something is broke in the rear axle then I drive in low speed and turn the car .I dont feel anything in high speed any idea tha this is bad oil? I can learn you little more swedish
thank you very much (tack så mycket)us car (Jänkare)Now you have learned some more wordsThank you Jerry
thank you very much (tack så mycket)us car (Jänkare)Now you have learned some more words
Thank you JerryI had the same symptoms with my '87 442. Changed the rear gear fluid and problem went away immediately and completely. Still have no idea why.
Thread Starter
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Joined: Mar 2011
Posts: 37
From: Sweden ,Gothenburg
Hi I hope I can solve the problem by change the oil in the rear axle. It seems like bad oil because it only come then the oil is warm. Thank you now I feel a little less worried Jerry
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Joined: Feb 2008
Posts: 11,798
From: Plano, TX
I have heard that limited slip axles will make that noise if the wrong oil is used. Time to jack up the car and see what axle you have.
Have you checked to see if it is just very low?
I worked for Ericsson over here in TX for about 6 years in the cell phone repair shop. Yes, they WERE repairable back then when they were the size of a small brick.
I was in Kumla a few weeks back in 1998 and they set me up in a nice historic hotel in Orebro, right next to the slotts (castle). Me and the guys would go to the castle basement for drinks and laughter. I loved the apple cider!
I wonder if Ericsson is still there in Kumla? I miss the people I worked with from there. Always happy and next to impossible to make them mad...
I revisited several cities back in March 2006 - Orebro, Lund, Stockholm, and some others. I toured by train like I did in 1998. I really liked it there - such a scenic, historic, neutral, easy going country...
Have you checked to see if it is just very low?
I was in Kumla a few weeks back in 1998 and they set me up in a nice historic hotel in Orebro, right next to the slotts (castle). Me and the guys would go to the castle basement for drinks and laughter. I loved the apple cider!
I wonder if Ericsson is still there in Kumla? I miss the people I worked with from there. Always happy and next to impossible to make them mad...
I revisited several cities back in March 2006 - Orebro, Lund, Stockholm, and some others. I toured by train like I did in 1998. I really liked it there - such a scenic, historic, neutral, easy going country...
Thread Starter
Registered User
Joined: Mar 2011
Posts: 37
From: Sweden ,Gothenburg
I have heard that limited slip axles will make that noise if the wrong oil is used. Time to jack up the car and see what axle you have.
Have you checked to see if it is just very low?
I worked for Ericsson over here in TX for about 6 years in the cell phone repair shop. Yes, they WERE repairable back then when they were the size of a small brick.
I was in Kumla a few weeks back in 1998 and they set me up in a nice historic hotel in Orebro, right next to the slotts (castle). Me and the guys would go to the castle basement for drinks and laughter. I loved the apple cider!
I wonder if Ericsson is still there in Kumla? I miss the people I worked with from there. Always happy and next to impossible to make them mad...
I revisited several cities back in March 2006 - Orebro, Lund, Stockholm, and some others. I toured by train like I did in 1998. I really liked it there - such a scenic, historic, neutral, easy going country...
Have you checked to see if it is just very low?
I worked for Ericsson over here in TX for about 6 years in the cell phone repair shop. Yes, they WERE repairable back then when they were the size of a small brick.
I was in Kumla a few weeks back in 1998 and they set me up in a nice historic hotel in Orebro, right next to the slotts (castle). Me and the guys would go to the castle basement for drinks and laughter. I loved the apple cider!
I wonder if Ericsson is still there in Kumla? I miss the people I worked with from there. Always happy and next to impossible to make them mad...
I revisited several cities back in March 2006 - Orebro, Lund, Stockholm, and some others. I toured by train like I did in 1998. I really liked it there - such a scenic, historic, neutral, easy going country...
Sweden its a nice place to live in but a little bit expensive ,The only thing I know about Kumla is there is a big prison where. But if you going to sweden again you must visit the west coast (best coast)Stockholm is that we call it Swedens back side
Thanks Jerry
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Joined: Mar 2011
Posts: 37
From: Sweden ,Gothenburg
Changed Oil
Now I have changed the oil in the rear axle it look not so bad as I thought but it has probably been there since 1972 .I found a sticker in the trunk that says that I have antispin.It look ok in the axle no metal on the magnet and everything inside looks ok , Now it feels ok I gonna take a long turn in the weekend .The oil I used was a Hypoid 90 limited slip from castrol see picture.Thank you all who has help me, you here from me again then next problem comes up 
Thanks Jerry
Thanks Jerry
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Joined: Feb 2010
Posts: 1,587
From: West Michigan
The easy way to tell if you have anti-spin (if the unit is not worn out) is whether it leaves two long black marks or one long black mark on the pavement when you floor it.
In your third picture, that S-shaped spring in the center, and the stack of clutch discs you see to the right, verifies that this is an anti-spin (posi) differential.
If you ever find that the rear end "chatters" when you go around corners or step on the gas hard, then I recommend you drain the Castrol and use nothing but GM gear oil and the GM posi additive. You probably won't have any problems with the Castrol, but I've never heard of anyone having problems if they use the GM stuff.
In your third picture, that S-shaped spring in the center, and the stack of clutch discs you see to the right, verifies that this is an anti-spin (posi) differential.
If you ever find that the rear end "chatters" when you go around corners or step on the gas hard, then I recommend you drain the Castrol and use nothing but GM gear oil and the GM posi additive. You probably won't have any problems with the Castrol, but I've never heard of anyone having problems if they use the GM stuff.
Thread Starter
Registered User
Joined: Mar 2011
Posts: 37
From: Sweden ,Gothenburg
The easy way to tell if you have anti-spin (if the unit is not worn out) is whether it leaves two long black marks or one long black mark on the pavement when you floor it.
In your third picture, that S-shaped spring in the center, and the stack of clutch discs you see to the right, verifies that this is an anti-spin (posi) differential.
If you ever find that the rear end "chatters" when you go around corners or step on the gas hard, then I recommend you drain the Castrol and use nothing but GM gear oil and the GM posi additive. You probably won't have any problems with the Castrol, but I've never heard of anyone having problems if they use the GM stuff.
In your third picture, that S-shaped spring in the center, and the stack of clutch discs you see to the right, verifies that this is an anti-spin (posi) differential.
If you ever find that the rear end "chatters" when you go around corners or step on the gas hard, then I recommend you drain the Castrol and use nothing but GM gear oil and the GM posi additive. You probably won't have any problems with the Castrol, but I've never heard of anyone having problems if they use the GM stuff.
If not the Castrol works can you tell me which GM oil I should use ?(good to know) Thanks Jerry
Thread Starter
Registered User
Joined: Mar 2011
Posts: 37
From: Sweden ,Gothenburg
Hi.The rear axle still feels very strange .Once I drove a few miles and I stop to fill some gas and then start again and drive straight ahead and it feels terrible after that has I only felt it when I drive slow and turn. Could it be wrong oil or the discs in the differial .Is it possible to test whether the discs are disposed?Is it common for them to wear out?
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