I just purchased a 1995 jag xjs 6 cylinder. Fluid is leaking from between the reservoir and the pump. I would like to know what the gasket looks like. Does anyone have a picture? Also, what fluid should i use? The local Jag dealer sold me Castrol 27LM9886 .(green fluid) I was told not to use this, after I put in a little to get the top up. Now do I have to flush the system? and How would I do that.

Any help would be appreciated.

Thanks, Ben

 

Welcome to the forum bh6pack,

I've moved your question from XJ6 & XJ12 Series I, II & III to XJS forum. Members here with the same model will be able to help.

Graham

 

thanks so much. after I posted it I realized I did in the wrong place

 

Hi I think that Malc suggested Royco 756

Royco 756 Aircraft Hydraulic Fluid - SkyGeek.com

 

Spec is an ISO 13 viscosity anti wear hydraulic oil. The green Castrol oil is intended for the mineral oil systems in the 1988-94 sedans ( code named XJ40) and is the wrong oil for the system. It's too thick and will put additional strain on the pump. Depending on the amount and temperatures, I have heard of pump failures from using it.

If you live in a hot climate and didn't put much it, it will probably be fine. I don't have a diagram at hand, but I think it's an O ring for the seal? Not sure. If it's flat, you could use something like Loctite 515 Flange Sealer.

I have found aircraft hydraulic oil, generically known as 5606 spec is the right viscosity. It comes in A and H grades, A is an older spec, H is for "super clean" aircraft systems. Either works, use whatever you can find and is cheaper.