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Austinsevenfriends › Austin Seven Friends Forum › Forum chat... v
Steering box oil

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Steering box oil
John Mason Offline
Lifetime lover of car tinkering
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Joined: Dec 2017 Posts: 1,132 Threads: 66
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Location: Nottinghamshire. Robin Hood County
Car type: Austin Ruby Mk1 1935
#1
18-04-2023, 01:18 PM
Hello all, Can somebody please advise me on what grade of oil is required for a Mk1 Ruby steering box. I believe it has a high number 150 or 180.
Thanks in anticipation.

John Mason
Would you believe it "Her who must be obeyed" refers to my Ruby as the toy.
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Bill Dixon Offline
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Joined: Aug 2017 Posts: 177 Threads: 1
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#2
18-04-2023, 01:22 PM
I use 250 sae steering box oil,better than grease. In my RP.
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David Stepney Offline
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Joined: Jan 2019 Posts: 1,481 Threads: 17
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Location: Bala North Wales
Car type: 1933 RP Standard Saloon
#3
18-04-2023, 08:25 PM
I use SAE 140, the same oil I use in the rear axle.
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Ivor Hawkins Offline
Mechanically sympathetic
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Joined: Aug 2017 Posts: 1,454 Threads: 21
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Location: The village of Evenley
Car type: 1934 Austin Seven RP Deluxe
#4
18-04-2023, 10:27 PM
I’m with David on this one, SAE140 for me, never had an issue.
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Stuart Giles Offline
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Location: N W Kent
#5
19-04-2023, 04:52 PM
I use SAE 250 oil in my cars, seems a bit less prone to leaking than the 140
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AustinWood Online
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Location: Scottish Borders
#6
19-04-2023, 05:29 PM
We use Penrite Steering Box oil.
Jim
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John Mason Offline
Lifetime lover of car tinkering
*****
Joined: Dec 2017 Posts: 1,132 Threads: 66
Reputation: 8
Location: Nottinghamshire. Robin Hood County
Car type: Austin Ruby Mk1 1935
#7
19-04-2023, 09:54 PM
Thank everybody I have some SAE 250 on order.

John Mason.
Would you believe it "Her who must be obeyed" refers to my Ruby as the toy.
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Chris KC Offline
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Joined: Aug 2017 Posts: 3,217 Threads: 100
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Location: Darkest Bedfordshire
#8
20-04-2023, 10:21 AM
I've only ever used ordinary grease, infrequently at that, and not found any problems.
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David Stepney Offline
Cantankerous Welsh Hermit
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Joined: Jan 2019 Posts: 1,481 Threads: 17
Reputation: 12
Location: Bala North Wales
Car type: 1933 RP Standard Saloon
#9
20-04-2023, 09:53 PM
The only problem when using grease is that the steering box worm , when turned one way,acts like an Archimedes screw sending the grease up the steering column, but cannot drag it down when turned the other way. The result is eventually grease gets to the top of the steering column and exudes from between the column and the steering wheel, with disastrous results to one's clothing.
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Chris KC Offline
GO 6285
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Joined: Aug 2017 Posts: 3,217 Threads: 100
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Location: Darkest Bedfordshire
#10
21-04-2023, 08:19 AM (This post was last modified: 21-04-2023, 08:20 AM by Chris KC.)
(20-04-2023, 09:53 PM)David Stepney Wrote: The only problem when using grease is that the steering box worm , when turned one way,acts like an Archimedes screw sending the grease up the steering column, but cannot drag it down when turned the other way. The result is eventually grease gets to the top of the steering column and exudes from between the column and the steering wheel, with disastrous results to one's clothing.

It does David. I would refer you to my earlier comments about infrequent maintenance! A little goes a long way.
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