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Sentinel Crankcase Oil
Greetings all,
I am after a gallon or 2 of Sentinel Crankcase oil.. anyone got spare they would like to sell? Or if I get a big barrel (as that is all it comes in) does anyone else want the other 15 - 20 litres? It is only for my 3 inch model.. and I fear that the big barrel would keep me stocked till I die! Thanks |
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Its an option.. hence if enough people are interested I will buy and split
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I think others in the small scales have used automatic transmission fluid or hydraulic oil. ATF is available in Halfords, and as far as I know does not have the emulsifiers that engine oil has, hence does not soak up condensate.
Don't have any personal experience however. HTH Martin |
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what type of sentinel
Quote:
We run a standard oil in the crankcase of our super with no problem |
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Mine is an Atkinson and it is what I have been recommended.. but if standard oil? (being what?) then I'm happy with that too....
A little knowledge really is leading me up some garden paths! |
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Graeme
The info you need to know is this:- Sentinel Crankcase Oil is designed for use where there is a likelyhood that the oil in the crankcase comes into contact with steam and consequently water. The crankcase oil is developed so that if left standing the oil and water easily seperate and the water can be drained off, leaving the oil fit for use again, and minimise the corrosion of the internal parts The S type Sentinel engine is single acting and it is therefore basically the mechanical fit of the pistons, rings and bores that prevent steam going into the crankcase, in reality an S type needs this type of oil. The earlier double acting Sentinel engines - i.e the Standard, Super and DG are double acting, and have glands on the piston rod that should prevent oil contamination. In reality it doesn't, but the problem is far less than with an S type. Then in the UK we have the condensation problem, our toys are not in continuous use, and given the moist aura surrounding a steam engine, and large masses of metal condensation within the crankcase can cause a significant amount of water in the crankcase. We are obviously talking full size here. I think in practice it is common over here for Sentinel Owners to use 'Crankcase Oil' in all types. Now, in your model application, some details of the engine construction may be usefull, I have noticed that wagon 'models' tend to bear only a passing resemblance to the full size prototype and therefore it is difficult to comment. However some of my thoughts.
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