Putoline DX4 10w/40: Recommended for FJ's in the winter & FJR's all year round.
It is a proper semi-synthetic.  It is mixed in a 50/50 ratio with a mineral base not as some oils that are marketed as semi-synthetic and hardly contain any synthetic oil at all! If you don’t change your oil between 6000 mile services this is the oil we suggest. Approved to JASO MA2, the oil industry’s  standard for Japanese Motorcycle engines. 
(We supply this oil in 4 or 5 Litres)
 
Morris Versimax: Recommend for FJ's in the summer.
Ring free oil, Its now called Versimax, It carries a high content of detergent that keeps the pistons clean and  stops rings from sticking.
(We supply 5 Litres of this oil)
 
Morris V-twin 20W-50: Higher grade oil for FJ's in the summer:
A top quality multigrade lubricant manufactured from high quality solvent refined mineral oils and a carefully formulated additive package. This grade provides high levels of engine cleanliness and wear protection, even under the most severe operating conditions.
(We supply this oil in 4 or 5 Litres)