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#502889 - 09/03/18 10:20 AM What oil for Jack Knight steering rack?
Calypso Red Offline
New to Talk Morgan

Registered: 20/08/17
Posts: 23
Loc: Staffordshire UK
Hi Everybody, I'm about to replace the gaiter on my JK steering rack for the third time. They seem to last a few hundred miles before splitting. I'm just wondering what oil people put in the boot? I thought chain saw oil as recommended on Gomog was a bit agricultural so I have been using Millers Classic Worm Steering Box Oil on the basis that it has 'Classic' & 'Steering' on the container! It does actually look like chain saw oil and sticks to everything. I can find no recommendations in the vehicle hand book, which is par for the course. What do other people stuff in the gaiter before tie wrapping it up? Regards.
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Calypso Red
1994 +8 BMW Calypso Red.
2002 4/4 4 seater BMW Calypso Red.

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#502895 - 09/03/18 11:27 AM Re: What oil for Jack Knight steering rack? [Re: Calypso Red]
Hamwich Online   content

Talk Morgan Sage

Registered: 28/04/08
Posts: 6750
Loc: Gloucestershire, UK
I keep coming across this idea that chain saw oil is sticky, clearly the idea has never come from someone who has actually owned and used a chain saw.

Chain bar oil's main jobs are to partly to keep the chain lubricated but more importantly to ensure the chain stays clean of buildup of sap and wood fibres/detritus. A saw chain in heavy use will be discarded long before the links wear, due to being regularly resharpened (about every hour's use of so) with a round file.

That's why when you use a chainsaw you get a nice buildup of oily sawdust all over the back sprocket housing of the saw instead of sticking to the chain and jamming everything up.
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Tim H.
1986 4/4 VVTi Sport, 2002 LR Defender, 1957 R4 CV, 2005 Ferrari Vipar

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#502903 - 09/03/18 12:47 PM Re: What oil for Jack Knight steering rack? [Re: Calypso Red]
Rog Offline

Talk Morgan Regular

Registered: 31/05/12
Posts: 825
Loc: Sumerset
I don’t know the answer to your question but I suspect that the oil type will be very much dependent on the rubber compound. Compatibility is important. For example EPDM is one of many compounds used for rubber gaitors and if that were in continual contact with say a mineral based oil (chainsaw can be) I suspect that it would not last very long at all.

I would contact the manufacture’s for advice.
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Roger
2006 4/4 Duratec

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#502913 - 09/03/18 03:04 PM Re: What oil for Jack Knight steering rack? [Re: Calypso Red]
Button Offline
Talk Morgan Enthusiast

Registered: 19/12/11
Posts: 1551
Loc: Seattle, USA
No not "Chain Oil". I used "Mobil XP Grease". But I can not remember where I got the information. On a Morgan I use Chain Oil on My rear leaf springs. It works between the leafs and softens the ride.
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#502953 - 09/03/18 07:09 PM Re: What oil for Jack Knight steering rack? [Re: Calypso Red]
Calypso Red Offline
New to Talk Morgan

Registered: 20/08/17
Posts: 23
Loc: Staffordshire UK
Hi Rog, thanks for the reply. 'Contacting the manufacture for advice' means contacting the Factory Service Dept! I will have a go and see if I get a reply. I'll report back if I get anything useful out of them. Question, do you always wear that blue hat when you drive your Mog?
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Calypso Red
1994 +8 BMW Calypso Red.
2002 4/4 4 seater BMW Calypso Red.

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#502960 - 09/03/18 07:57 PM Re: What oil for Jack Knight steering rack? [Re: Calypso Red]
Eddie Cairns Offline
Talk Morgan Regular

Registered: 09/08/11
Posts: 779
Loc: Aberdeenshire
I thought it was an anti fling brew that was designed not to spray itself over all and sundry, lubricate the chain and bar but I thought the chain was designed to fire the sawdust away from the chain and bar.

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#502983 - 09/03/18 10:31 PM Re: What oil for Jack Knight steering rack? [Re: Calypso Red]
Rog Offline

Talk Morgan Regular

Registered: 31/05/12
Posts: 825
Loc: Sumerset
Originally Posted By Calypso Red
Hi Rog, thanks for the reply. 'Contacting the manufacture for advice' means contacting the Factory Service Dept! I will have a go and see if I get a reply. I'll report back if I get anything useful out of them.
Good luck. My experience of emailing the factory for help has been good.

Originally Posted By Calypso Red
Question, do you always wear that blue hat when you drive your Mog?
Of course! If you drive a Noddy car then you need a Noddy hat.
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Roger
2006 4/4 Duratec

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#503537 - 13/03/18 07:49 PM Re: What oil for Jack Knight steering rack? [Re: Calypso Red]
Calypso Red Offline
New to Talk Morgan

Registered: 20/08/17
Posts: 23
Loc: Staffordshire UK
I have been on to the Manufacturer to-day (the Service Dept at the Factory) and spoke to a very nice man who said, Morgan recommend 'Semi Fluid Grease' for the J.K. steering rack. Anything liquid, like oil, will just pool in the bottom of the gaiter. This may not be all bad beause the pool of oil on the garage floor and down the drive will give early warning that it is spanner time again. The Factory use Morris K400EP, not something I have come across before. This is around £16 for a 3Kg tin. (This should last me into the next century.) Penrite classic oil range have 500ml for around £9.50, both P & P extra. There are no instructions, so I guess you just smear it all over, then put some on the rack and slip the gaiters on! Can't wait...
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Calypso Red
1994 +8 BMW Calypso Red.
2002 4/4 4 seater BMW Calypso Red.

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#503682 - 14/03/18 01:11 PM Re: What oil for Jack Knight steering rack? [Re: Calypso Red]
Rog Offline

Talk Morgan Regular

Registered: 31/05/12
Posts: 825
Loc: Sumerset
Thanks for posting back with the information.

I bet if we could only retain semi-fluid grease around our kingpins they would last so much longer!


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Roger
2006 4/4 Duratec

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