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what oil


dreadnought

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I expect SAE 15W40 will be fine in API CC or CD if you can find it. Otherwise API CE or at a push CF, CF will be easier to find but depending on how you use the boat just might cause the bores to glaze over time. MY feeling is that as long as you thrash it now and again and never charge on idle CF will probably be fine but do not hold me to that.

SAE 30 or SAE 20W50 should also do the job in the above API grades.

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We used Morris Golden Film 20W50 in the Turkish built BMC 1.8 in our last shareboat.  

http://www.morrislubricantsonline.co.uk/golden-film-sae-20w-50-classic-motor-oil.html

It got to 13,500 hours before needing replacement with a Beta 43.

Edited by cuthound
To add a missing worm
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I agree with what Tony and Cuthound have said. We have a BMC 1.8 in Tyto. Morris oil is good. Any good motor factors should stock a suitable oil. Another manufacturer is Comma

http://www.commaoil.com/passenger-vehicles/products/view/262

If you have a PRM hydraulic gearbox it uses the same oil as the engine

Edited by Richard T
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