In article ,
Andy Hall wrote:
b) An oil for a sump in the body of the machine used to lubricate the
internal gears. For this, Oleoblitz EHT 16 or any other oil with
viscosity SAE 30.

I haven't been able to find oil of this type in the obvious places
like Halfords. It seems to be multigrade engine oil and not much
more.

If it's a basic SAE 30, you can still get oils like this from an old car
specialist like

www.holden.co.uk

However, I'd say that a modern 20-50 would have about the same viscosity
at the temperatures your gearbox is likely to run at. However, with many
old car boxes that once used SAE 30, it's common to use ATF these days.

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