These straight transmission oils, without additives, have been formulated for use in conical torque, non-hypoid gear systems such as straight bevel, spiral bevel or worm gears. The choice of viscosity is dictated by the technology used and the viscosity recommended by the manufacturer should be used. As a general rule if the gear change is stiff when the gearbox is cold and becomes easier as it warms, due to the oil thinning during use, the correct grade oil is selected.
Transoil 90 - This oil is suitable for axles and gearboxes of light to medium vehicle from the twenties & thirties.
Transoil 140 - This oil is suitable for axles and gearboxes of medium to heavy vehicles from the twenties & thirties. Equivalent to 120,140 and 160w.
Transoil 250 - The thickest transmission oil, also known as 600w ideal for veteran and Edwardian rear axles and where the gearbox needs a high viscosity oil.
(This is typically used in vehicles between 1918 & 1939.)
Transoil semi-fluid This semi-fluid grease is ideal for the transmissions of certain vintage cars and for the gearboxes of motorbikes such as the Burman.
(This is typically used in vehicles up to 1918.)
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