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Engine oils
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Rollmop



Joined: 23 Dec 2016
Posts: 14
Location: Market Drayton, Shropshire

PostPosted: Sat Jan 16, 2021 12:00 pm    Post subject: Engine oils Reply with quote

I am rebuilding my Mayflower engine following a rebore and would like opinions regarding oil. Should I refill with a classic oil as near to the original specification as I can get or go for a modern multigrade with all the detergents etc. This engine has no fine oil filter and just relies on a coarse floating strainer on the oil pump intake and baffles in the sump to let any particles settle out (when I took the sump off you could have cleaned it out with a shovel)
Opinions as to which way to go would be much appreciated
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1971 Herald convertible
1952 Triumph Mayflower
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alastairq



Joined: 14 Oct 2016
Posts: 1510
Location: East Yorkshire

PostPosted: Sat Jan 16, 2021 12:18 pm    Post subject: Reply with quote

https://www.classic-oils.net/

I have found the above dealer [UK] to have a fair range of common types of oil for older applications.

Also has some good advice on their home page regarding oils for older vehicles.

Probably as well looking there for the nearest spec oil to what was originally specified by Triumph?
Also, I have found the above dealer to be reasonable in price. Certainly compared to many of the mainstream so called classic oil brands.
I have no other link to the above other than as a satisfied customer.

Another dealer I have dealt with, that sells oil in larger quantities, is

https://www.ryeoil.co.uk/product-category/vintageclassic/
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Miken



Joined: 24 Dec 2012
Posts: 379

PostPosted: Sat Jan 16, 2021 2:54 pm    Post subject: Reply with quote

Phone the people who make the stuff. They will know.
Casrol, Miller,Morris, Penrite etc.and speak to their technical department.
They will talk to you for as long as you like and answer your questions.
They are always friendly and helpful and never try to sell you anything.
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alanb



Joined: 10 Sep 2012
Posts: 514
Location: Berkshire.

PostPosted: Sat Jan 16, 2021 3:31 pm    Post subject: Reply with quote

If your car doesnít have a decent full flow oil filter then donít use modern oils that have detergent and additives that hold the dirt in suspension to be captured by the filter. You can still use a multi grade oil designed for classic cars that has low detergent such as Commer or Millerís or even Halfords classic 20/50
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Minxy



Joined: 22 Sep 2010
Posts: 255
Location: West Northants

PostPosted: Sat Jan 16, 2021 3:35 pm    Post subject: Reply with quote

If it were me I would use a Ďrunning in oilí to start with. If you google it you will find most manufactures sell it. I donít know what the recommended period of use is but back in the day when we used it in modified engines it was drained after 1000 miles when the car was set up on the rolling road.
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Rollmop



Joined: 23 Dec 2016
Posts: 14
Location: Market Drayton, Shropshire

PostPosted: Thu Jan 21, 2021 3:57 am    Post subject: Engine oils Reply with quote

Thanks for the valued information. I have talked to Morris (as they are local to me) and they have advised on the best engine and gearbox oil for this old engine and also on a specialist assembly oil for bearing surfaces.
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Failure is not an option - in my case it is usually a feature.
1971 Herald convertible
1952 Triumph Mayflower
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lowdrag



Joined: 10 Apr 2009
Posts: 1429
Location: Le Mans

PostPosted: Thu Jan 21, 2021 8:25 am    Post subject: Reply with quote

I used to buy from Classic Oils on his stand at the Silverstone Classic. Great advice and very keen pricing, and I have no reason to believe anything has changed. A wide range of oils for all cars and applications. It used to be difficult - and expensive - to get 20/50 in France but, for anyone who might at some time venture this side of the Channel, Norauto (equivalent of Halfords) sell it at Ä15 for 5 litres.
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