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T140 Engine Oil - Which do you use? UK residents* #420698
02/25/12 3:51 pm
02/25/12 3:51 pm
Joined: Sep 2008
Posts: 165
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Monty Offline OP
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Re: T140 Engine Oil - Which do you use? UK residents* [Re: Monty] #420701
02/25/12 4:04 pm
02/25/12 4:04 pm
Joined: Mar 2006
Posts: 3,657
Norfolk, UK
L.A.B. Online content
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L.A.B.  Online Content
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Norfolk, UK
Originally Posted By: Monty
Which oil do you use?


I was using Halfords Classic 20W/50 oil in my T140 but this year I have changed to Morris V Twin 20W/50

http://www.morrislubricantsonline.co.uk/scripts/prodView.asp?idproduct=171

Originally Posted By: Monty
I thought car oil cannot be used for bikes sharing engine oil, due to clutch slip problems...is this true?


Not all 'car' oils contain friction modifiers which are supposed to be the cause of clutch slip.


Originally Posted By: Monty
do Nortons have seperate primary?


Yes.

Originally Posted By: Monty
Anyone used ebay for their Oil?


Yes (Mobil 1 from eBay seller: theappledorn)

Last edited by L.A.B.; 02/25/12 4:11 pm.
Re: T140 Engine Oil - Which do you use? UK residents* [Re: L.A.B.] #420709
02/25/12 4:44 pm
02/25/12 4:44 pm
Joined: Aug 2001
Posts: 1,081
Cheshire UK
Phatt Bob Offline
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Cheshire UK
I've always used Castrol GTX with a 5% splash of Activ8 in racers and road bikes.

Never had any of the mythical problems you're supposed to get with a plunger pump etc.....

How far out in the styx are you? Lake district?

Bob


Phatt Bob
'95 Daytona 1200
'98 Daytona 1200 dragbike
ex-850 T140 Caff Racer, 850 Triton, Morgo T120, Starfire and Pretend Daytona 500 owner
Re: T140 Engine Oil - Which do you use? UK residents* [Re: Phatt Bob] #420716
02/25/12 5:27 pm
02/25/12 5:27 pm
Joined: Mar 2006
Posts: 3,657
Norfolk, UK
L.A.B. Online content
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Norfolk, UK
Originally Posted By: Phatt Bob
I've always used Castrol GTX with a 5% splash of Activ8 in racers and road bikes.


I also used GTX when it was 20W/50 (then 15W/50) but that hasn't been available in the UK for years.

http://www.castrol.com/castrol/sectionbodycopy.do?categoryId=9014101&contentId=7073084

Re: T140 Engine Oil - Which do you use? UK residents* [Re: Monty] #420743
02/25/12 7:32 pm
02/25/12 7:32 pm
Joined: Feb 2012
Posts: 130
Wiltshire England
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DUHC Offline
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Wiltshire England
Just getting back into bikes with a TR6, but I've always run all my old cars and four stroke bikes on 20-50, and preferably the late lamented Duckhams Q20-50 eg my first 4-stroke was a Tiger Cub and last a '52 Guzzi Super Alce 500 single.

These days I just buy Unipart 20-50 from my local Unipart outlet, which is what will go in the TR6. Most of these oils now say "suitable for the older engine" ie motors either not built, or no longer, to the tolerances of modern stuff. Maybe if the engine's just been rebuilt one could use a synthetic.

As a pal of mine said "check the spec of a modern cheap supermarket 20-50 - it's way superior to the 'quality' 20-50s we bought as kids". Oil technology has improved, but we're still running the same sort of machinery!

Re: T140 Engine Oil - Which do you use? UK residents* [Re: Monty] #420779
02/25/12 9:52 pm
02/25/12 9:52 pm
Joined: Mar 2005
Posts: 10,131
Boston, Massachusetts
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John Healy Offline

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Boston, Massachusetts
Quote:
Not all 'car' oils contain friction modifiers which are supposed to be the cause of clutch slip.


Check the label for the JASO rating of ma or mb. Japanese motorcycle manufactures felt the SAE rating was not serving the needs of motorcycles with wet clutches and developed the JASO standard. The ma series does not have friction modifiers and mb does.

It is oil viscosity that supports the load applied by the connecting rod. The viscosity recommended by the manufacturer takes into account their ability to control the surface finish and accuracy of the rod journal. While these old rod crank journal feel smooth they are actually a series of bumps and tears. The oil must have sufficient viscosity to support the rod bearing above these abnormalities or the bearing will fail prematurely. Keeping this in mind Triumph, and most British motorcycle manufacturers of the day that used plain bearings, recommended 20/50.


Re: T140 Engine Oil - Which do you use? UK residents* [Re: Monty] #420783
02/25/12 10:19 pm
02/25/12 10:19 pm
Joined: May 2007
Posts: 1,978
Christchurch NZ
R Moulding Offline
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R Moulding  Offline
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Christchurch NZ

I have a friend in the UK with a similar T140 with shared primary. The local bike shop sold him a synthetic motorcycle oil. The clutch started to slip almost imediately. It only stopped after the plates were removed and cleaned and the bike run on Castrol Classic 20/50.

Rod


So remember, when you're feeling very small and insecure,
How amazingly unlikely is your birth;
And pray that there's intelligent life somewhere out in space,
'Cause there's bugger all down here on Earth!
Re: T140 Engine Oil - Which do you use? UK residents* [Re: Monty] #420792
02/25/12 10:52 pm
02/25/12 10:52 pm
Joined: Mar 2005
Posts: 10,131
Boston, Massachusetts
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John Healy Offline

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Boston, Massachusetts
Rod: There are synthetics that are rated "JASO ma" and are perfectly suitable for this engine!


Re: T140 Engine Oil - Which do you use? UK residents* [Re: Monty] #420802
02/25/12 11:52 pm
02/25/12 11:52 pm
Joined: Jun 2010
Posts: 518
Maine
M
MikeinBiddeford Online content
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Maine
I am another person who had a slipping clutch when I used Mobil 1 synthetic.
Thank you John. I will write JASO ma on my garage wall.


Please do not believe anything I write. I am a hack but I like to guess the right answers.
Re: T140 Engine Oil - Which do you use? UK residents* [Re: Monty] #420826
02/26/12 1:12 am
02/26/12 1:12 am
Joined: May 2007
Posts: 1,978
Christchurch NZ
R Moulding Offline
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Sorry John, i will learn to read all the thread.

Rod


So remember, when you're feeling very small and insecure,
How amazingly unlikely is your birth;
And pray that there's intelligent life somewhere out in space,
'Cause there's bugger all down here on Earth!
Re: T140 Engine Oil - Which do you use? UK residents* [Re: Monty] #420956
02/26/12 4:07 pm
02/26/12 4:07 pm
Joined: Dec 2004
Posts: 9,332
Scotland
kommando Online content
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Scotland
I use CFS 10w60 in the Commando but plan to change to this CSS 20w60 next time as I get a few drops of oil after a run.

http://www.millersoils.net/1_Millers_frame_MOTORSPORT.htm

Re: T140 Engine Oil - Which do you use? UK residents* [Re: Monty] #421084
02/27/12 12:31 am
02/27/12 12:31 am
Joined: Sep 2008
Posts: 110
Norfolk, UK
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Lorenzo Offline
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Posts: 110
Norfolk, UK
Monty -

I also struggled to find 20W50 oil and asked the exact same question in Nov. '09 ; it brought quite a response.
(Try doing a search)

No definitive answer - but there is no definitive answer, of course..........


1978 T140E
1979 TR7V
1960 Royal Enfield Bullet 350
Waste not, want not.........Thrift is a virtue.
Re: T140 Engine Oil - Which do you use? UK residents* [Re: Monty] #421281
02/28/12 12:37 am
02/28/12 12:37 am
Joined: Mar 2005
Posts: 10,131
Boston, Massachusetts
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John Healy Offline

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Boston, Massachusetts


Re: T140 Engine Oil - Which do you use? UK residents* [Re: Monty] #421285
02/28/12 1:02 am
02/28/12 1:02 am
Joined: Feb 2008
Posts: 4,342
New Jersey USA
Tridentman Offline

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New Jersey USA
For those of us in US I recommend Classic Oil Supply of Richmond VA (# is 804-261-4140). They stock Miller oils. It is a one man operation and the guy there, Bob Bauer, really knows his stuff. He also has classic bikes himself (BSA etc).
HTH

Re: T140 Engine Oil - Which do you use? UK residents* [Re: Monty] #421314
02/28/12 3:03 am
02/28/12 3:03 am
Joined: Mar 2005
Posts: 10,131
Boston, Massachusetts
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John Healy Offline

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Boston, Massachusetts
He has a break-in oil I would recommend.


Re: T140 Engine Oil - Which do you use? UK residents* [Re: Monty] #421357
02/28/12 8:49 am
02/28/12 8:49 am
Joined: May 2006
Posts: 2,610
London United Kingdom
meriden4ever Offline
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London United Kingdom
Reg Allen's use Morris oils on the service but I top it up with Morrison's 20w/50. I used to have Tesco's 20w/50.
If it sounds sacriligious, there isn't much by way of quality 20w/50 oil easily available. I used to use Castrol then (my fave) Duckhams but for a good few years now have struggled to find a quality 20w/50.


1983 TR65T Tiger Trail
1983 TSSAV
1983 TSX
1983 TR65 Thunderbird
1982 TR7T Tiger Trail
Re: T140 Engine Oil - Which do you use? UK residents* [Re: Monty] #421418
02/28/12 5:33 pm
02/28/12 5:33 pm
Joined: Feb 2009
Posts: 204
London, England
Triumph5ta Offline
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for UK riders: A couple of special offers from Classic Oils of Aylesbury. Silkolene and Millers

http://classicoils.absolutewebhosting2.co.uk/Special-Offers

Re: T140 Engine Oil - Which do you use? UK residents* [Re: Monty] #421576
02/29/12 10:18 am
02/29/12 10:18 am
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Posts: 3,600
Emsworth, sunny south of Engla...
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dave jones Offline
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Emsworth, sunny south of Engla...
Shell X100 20W50 is a similar quality mineral oil to Duckhams. You can get it in Shell garages or if they haven't got any in they should be able to get it. I have used it several times in my 67 and because it is api SF it will be fine in a T140.

It certainly is a shame that T140s can't benefit from synthetic oil which is what I use in my 67 mostly these days.

Dave

Re: T140 Engine Oil - Which do you use? UK residents* [Re: dave jones] #421640
02/29/12 5:03 pm
02/29/12 5:03 pm
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Posts: 160
England
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Paul744 Offline
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