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Differential Oil
Posted: Fri Jul 29, 2005 1:37 am
by juergenosmer
Hello
my name is Juergen and I m new in this group. I m also new in Mg Tc .
What kind of Oil should I use for the rear axle?
Thanks for assistance.
Juergen
Re: Differential Oil
Posted: Fri Jul 29, 2005 2:34 am
by E.Worpe
Hi Juergen,
The original specification was for "Hi-Press 140". This then became
known as "EP 140", where EP stands for Extreme Pressure. Crown wheels
and pinions experience very high tooth contact forces, and need an oil
with additives that prevent the oil breaking down under extreme pressure.
EP oils suitable for our spiral bevel type gears have a G4 code. Hypoid
type gears, which are exposed to even greater stresses, need a G5 spec.
oil, however these are often called EP oils also.
Some multigrade, possibly synthetic, oils are now available with an
EP 75W-140, G4 specification. These should be suitable for both gearbox
and backaxle, although confirmation of this should be left to others
with greater knowledge.
Regards, Eric.
-----Original Message-----
Hello
What kind of Oil should I use for the rear axle?
Thanks for assistance.
Juergen
[Non-text portions of this message have been removed]
Re: Differential Oil
Posted: Fri Jul 29, 2005 9:45 am
by fnitz
Hi Juergen,
Where are you?
What is the SN of your car?
Fred TC1353
Scotts Valley, CA. USA
-----Original Message-----
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juergenosmer
Sent: Friday, July 29, 2005 1:36 AM
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Subject: [mg-tabc] Differential Oil
Hello
my name is Juergen and I m new in this group. I m also new in Mg Tc .
What kind of Oil should I use for the rear axle?
Thanks for assistance.
Juergen
Yahoo! Groups Links
Re: Differential Oil
Posted: Sat Jul 30, 2005 3:26 am
by Roger Furneaux
hello Juergen, welcome to the list. We do not have many members in Germany,
but of course there are a lot of TC owners in the MGCC Deutschland for you
to contact.
As Eric has said, only use EP140, but a good tip is to go to an agricultural
supplier: a lot of tractor transmissions use it, and AgriCastrol EP140 is
exactly the same, but a lot cheaper than oil sold by car dealers. The
multigrade oil Eric mentions has had no reports, good or bad, from M.G.
owners, but of course will be much more expensive!
ocTagonally
TCRoger, Devon, Olde England
Juergen Osmer asked:
>my name is Juergen and I m new in this group. I m also new in Mg Tc .
>What kind of Oil should I use for the rear axle?
[Non-text portions of this message have been removed]
Differential Oil
Posted: Sun Jul 31, 2005 12:50 am
by banjomey2@aol.com
Hi J rgen,
go
www.oldtimeroel.de (it's Miller-Oils in Germany). They have everything you
need for your TC for moderate prices, oli for engine, gearbox, diff, any kind
of grease etc. You'll find their phone-no. on the website too and will give
you excellent personal advice via phone. If you're a member of a club or have a
Deuvet-card you'll get an extra rebate.
Happy motoring with your new TC.
Rgds,
Peter "Banjo" Meyer
TC 9027, 1949
Morgan +4, 1965
TR 3A, 1959
Rilye TT Sprite Special, 1935
[Non-text portions of this message have been removed]
Differential Oil
Posted: Thu Jul 11, 2019 11:21 am
by Dick Little
I used a Redline diff oil and immediately the pinion shaft seal began to leak a lot. The TA did not leak with regular diff oil.
Before I get into pulling everything apart, I shall try a conventional rear end oil at 140 weight.
Do any members have any similar experience and, if so, can one get away with a bit heavier diff oil?
The car is an old ARCA car so it was heavily raced in the 30's.
Thank you, all.
Dick Little
TA 1326
Re: Differential Oil
Posted: Thu Jul 11, 2019 12:06 pm
by phil smith
I am baffled by these discussions - aren't viscosity ratings standardized for temperatures (i.e. a 90/140 hypoid oil is "90" at a spec temp and "140" at another, with both temps meeting some sort of ?SAE standard)? If that's true, why should brand name make a difference in how the equipment feels / leaks/doesn't leak? Resistance to breakdown from heat/contamination and freedom from and resistance to varnishing I understand might differ since different suppliers have different additive properties. But the way the machine feels to the hand is a matter of viscosity....or so I would think.
I'm willing to be scientifically enlightened (no Slick 50 stories, please).
----pps
On Thursday, July 11, 2019, 2:22:31 PM EDT, dick little
vze4xyru@gmail.com [mg-tabc] mg-tabc-noreply@yahoogroups.com> wrote:
I used a Redline diff oil and immediately the pinion shaft seal began to leak a lot. The TA did not leak with regular diff oil. Before I get into pulling everything apart, I shall try a conventional rear end oil at 140 weight.
Do any members have any similar experience and, if so, can one get away with a bit heavier diff oil?The car is an old ARCA car so it was heavily raced in the 30's.
Thank you, all.Dick LittleTA 1326
Re: Differential Oil
Posted: Thu Jul 11, 2019 12:51 pm
by Clive Sherriff
What difference it makes is due to the various additives that various makers put in the oil.
A rebuilt XPAG for example may never bed in with some modern oils. I've had rebuilt XPAGs come in chucking out blue smoke, and having low compression after 1000's of miles where a wacky modern additive or synthetic oil ( of the right nominal grade) has been used.
Draining, flushing, and filling with a straight SAE30 classic oil bedded everything correctly in within a few hundred miles.
Once everything IS bedded in, then I would think that these modern oils might well extend the life of any engine.
Much the same applies to older gearboxes and I'd NOT use modern additive filled oils here, for example you would likely find the synchro performance badly affected as it's too slippery. in a few cases where the change was poor I have found modern synchro oils used, and going back to a normal EP90 or EP140 has cured the problem instantly.
All Best,
CliveOxford, UK
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On Thu, 11 Jul 2019 at 20:08, phil smith
mgpsmith@att.net [mg-tabc] mg-tabc-noreply@yahoogroups.com> wrote:
[u][/u]
I am baffled by these discussions - aren't viscosity ratings standardized for temperatures (i.e. a 90/140 hypoid oil is "90" at a spec temp and "140" at another, with both temps meeting some sort of ?SAE standard)? If that's true, why should brand name make a difference in how the equipment feels / leaks/doesn't leak? Resistance to breakdown from heat/contamination and freedom from and resistance to varnishing I understand might differ since different suppliers have different additive properties. But the way the machine feels to the hand is a matter of viscosity....or so I would think.
I'm willing to be scientifically enlightened (no Slick 50 stories, please).
----pps
On Thursday, July 11, 2019, 2:22:31 PM EDT, dick little
vze4xyru@gmail.com [mg-tabc] mg-tabc-noreply@yahoogroups.com> wrote:
I used a Redline diff oil and immediately the pinion shaft seal began to leak a lot. The TA did not leak with regular diff oil. Before I get into pulling everything apart, I shall try a conventional rear end oil at 140 weight.
Do any members have any similar experience and, if so, can one get away with a bit heavier diff oil?The car is an old ARCA car so it was heavily raced in the 30's.
Thank you, all.Dick LittleTA 1326
[img]https://ec.yimg.com/ec?url=https%3A%2F%2Fipmcdn.avast.com%2Fimages%2Ficons%2Ficon-envelope-tick-round-orange-animated-no-repeat-v1.gif&t=1563492172&sig=4GkiWr1_2dd_IGxV0VnB1A--~E[/img] Virus-free.
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Re: Differential Oil
Posted: Thu Jul 11, 2019 4:15 pm
by Mike
I use Miller s 140 gearoil in the differential. Available at Moss. Penrite mild EP in the gearbox. Available at Restoration supply.
Sent from my iPhone
On Jul 11, 2019, at 11:21 AM, dick little
vze4xyru@gmail.com [mg-tabc] mg-tabc-noreply@yahoogroups.com> wrote:
I used a Redline diff oil and immediately the pinion shaft seal began to leak a lot. The TA did not leak with regular diff oil. Before I get into pulling everything apart, I shall try a conventional rear end oil at 140 weight.
Do any members have any similar experience and, if so, can one get away with a bit heavier diff oil?The car is an old ARCA car so it was heavily raced in the 30's.
Thank you, all.Dick LittleTA 1326
Differential Oil
Posted: Sat Jul 13, 2019 1:48 pm
by Dick Little
Thank you to those who responded with their experience and choice when I asked about differential oil and Red Line special lube..
I think it is 140 for me; nothing special