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Synthetic Oil For Differential? #612396
14/01/20 11:18 AM
14/01/20 11:18 AM
Joined: Aug 2008
Posts: 65
UK
clubsport Offline OP
Just Getting Started
clubsport  Offline OP
Just Getting Started

Joined: Aug 2008
Posts: 65
UK
Just contemplating changing the differential oil in my '70s 4/4.

Looking at various options for the desired Castrol 75W-90 I have previoulsy used and most of them now appear to be synthetic.

Is this now the default option for the older Salisbury axle, or should I search for an older EP type diff oil?

Cheers.

( I did search the forum before posting this, but found nothing conclusive).

Last edited by clubsport; 14/01/20 11:19 AM.
Re: Synthetic Oil For Differential? [Re: clubsport] #612404
14/01/20 12:29 PM
14/01/20 12:29 PM
Joined: Aug 2011
Posts: 2,200
Derby
P
PhilRoyle Offline
Talk Morgan Expert
PhilRoyle  Offline
Talk Morgan Expert
P

Joined: Aug 2011
Posts: 2,200
Derby
If you contact Millers Oils they may be able to advise you. Have a word with Kevfitz if you need an interpreter as they are based in Wakefield!


2010 4/4 sport - le mans green
Re: Synthetic Oil For Differential? [Re: clubsport] #612410
14/01/20 01:17 PM
14/01/20 01:17 PM
Joined: Aug 2008
Posts: 65
UK
clubsport Offline OP
Just Getting Started
clubsport  Offline OP
Just Getting Started

Joined: Aug 2008
Posts: 65
UK
Thanks, I was hoping I might find somebody who knew on the predominant Morgan forum?

Especially as I am using one of those new fangled Salisbury diffs! smile

Cheers.

Re: Synthetic Oil For Differential? [Re: clubsport] #612411
14/01/20 01:33 PM
14/01/20 01:33 PM
Joined: Nov 2015
Posts: 2,663
Yorkshire
CooperMan Offline
Talk Morgan Expert
CooperMan  Offline
Talk Morgan Expert

Joined: Nov 2015
Posts: 2,663
Yorkshire
Billy Bellinger of JB Sports Eng, is the expert on Mog Axles & 'Boxes, if Millers can't advise

Advert in Miscellany will have contact details (I only have his mobile nr & don't want to put it on a public forum)


Jon M
Re: Synthetic Oil For Differential? [Re: PhilRoyle] #612412
14/01/20 01:36 PM
14/01/20 01:36 PM
Joined: May 2015
Posts: 249
North Yorks
John07 Offline
L - Learner Plates On
John07  Offline
L - Learner Plates On

Joined: May 2015
Posts: 249
North Yorks
Originally Posted by PhilRoyle
If you contact Millers Oils they may be able to advise you. Have a word with Kevfitz if you need an interpreter as they are based in Wakefield!


No they are not, they are in Brighouse.
Millers use Opie oils for their online sales.

Cheers,
John

Last edited by John07; 14/01/20 01:48 PM.
Re: Synthetic Oil For Differential? [Re: clubsport] #612449
14/01/20 05:37 PM
14/01/20 05:37 PM
Joined: Aug 2008
Posts: 65
UK
clubsport Offline OP
Just Getting Started
clubsport  Offline OP
Just Getting Started

Joined: Aug 2008
Posts: 65
UK
I was hoping I could receive independent advice from a fellow Morgan owner & enthusiast, who has experience of changing their diff oil.

Maybe when the Salisbury axle has been around for a while, there may be a few people with practical experience of them ?

I can call a specialist, who will no doubt sell me something, that's not really what I was asking?

Maybe, TalkMorgan, could just set up a list of specialists to call and cut out the middle man of a "forum"? smile

Cheers! smile

Re: Synthetic Oil For Differential? [Re: clubsport] #612456
14/01/20 06:11 PM
14/01/20 06:11 PM
Joined: Dec 2019
Posts: 32
Touraine, France
Toucan Offline
Just Getting Started
Toucan  Offline
Just Getting Started

Joined: Dec 2019
Posts: 32
Touraine, France
I read somewhere that GL4 grade is to be preferred to more modern GL5 which contain additives potentially corroding brass used on old cars diff...
cheers!


Toucan 1981 4/4 Kent
Re: Synthetic Oil For Differential? [Re: clubsport] #612476
14/01/20 08:50 PM
14/01/20 08:50 PM
Joined: Oct 2013
Posts: 6,600
Northamptonshire UK
Stringers Best Mate Offline
Talk Morgan Sage
Stringers Best Mate  Offline
Talk Morgan Sage

Joined: Oct 2013
Posts: 6,600
Northamptonshire UK
Originally Posted by clubsport
I was hoping I could receive independent advice from a fellow Morgan owner & enthusiast, who has experience of changing their diff oil.

Maybe when the Salisbury axle has been around for a while, there may be a few people with practical experience of them ?

I can call a specialist, who will no doubt sell me something, that's not really what I was asking?

Maybe, TalkMorgan, could just set up a list of specialists to call and cut out the middle man of a "forum"? smile

Cheers! smile



I can't help but feel that said fellow Morgan owner & enthusiast may well not give the correct advice..!

The trouble with the internet is that people simply recite what they've heard, meaning the waters get muddy very quickly and then compromise on an outcome, none of which may be the exact information one requires.

I'm sure time spent in a few quality telephone calls with acknowledged expertise is a safer outcome. Maybe you could then back fill with your experience to assist others, and maybe start a list of those specialists, perhaps..?

It all puts something back into the pot, after all.


Steve
Re: Synthetic Oil For Differential? [Re: clubsport] #612484
14/01/20 09:50 PM
14/01/20 09:50 PM
Joined: May 2015
Posts: 108
H
Horror Offline
L - Learner Plates On
Horror  Offline
L - Learner Plates On
H

Joined: May 2015
Posts: 108
For 1970s Salisbury axles: Castrol do both an EP90 in their Classic range and for lim slip axles LS90 is still available though now renamed as AxleZ LS90. Both are as the original listings by Morgan and Salisbury, why are you thinking of something different.
At a personal level I’ve happily used LS90 for the last 150,000m; however whether it’s better or worse than any other specified oil
would have been, I’ve no idea.

Re: Synthetic Oil For Differential? [Re: clubsport] #612499
15/01/20 12:04 AM
15/01/20 12:04 AM
Joined: Dec 2017
Posts: 774
Evergreen, Colorado, USA
B
britmog Offline
Talk Morgan Regular
britmog  Offline
Talk Morgan Regular
B

Joined: Dec 2017
Posts: 774
Evergreen, Colorado, USA
Castrol 75/90 is a great oil, stay with it, why change?


Bruce Marshall
1964 4/4 Series V Comp (Megan)
1994 +8 (Maurice)
2013 M3W (Olga)

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