Yeah im using a facet cube one. Its rated 7-10psi. That joe gibbs is hard to find over here. I have found some fork oil thats been recommended but @ £22 a litre is expensive. Its rated SAE 5 and is very thin. Compressor oil is crap, far too thick. Just draining it out now so i can try another.
I would get a proper oil pump like the mocal one but you cant use the pump until the oil is warm so thats out the window.
Where did you get the joe gibbs from?