What Oil in a GSX 600F 1998 model?

[min200]

Hi all I am hoping you can help. I have a GSX 600F 1998 model and the oil is rather low so instead of topping it up I suppose I should give it a good service!

What type of oil is best to use for this model?

Thanks in advance for any replies

[temeluchus]

10w40 supermarkets finest.
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[andys675]

silkolene super 4 10/40W

if you go on castrol or silkolene's own website they have their own grade selector!
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Some people feel the rain, others just get wet.

[min200]

Thanks everyone that's much appreciated!