Send BigJon a PM not sure if he is still in town but he may be able to help if suttons cant get you in to have a look. I would help but don't know enough about the cooling side.
On that dust storm you should have been at the airport, was pretty specky watching the 737's emerging fromt the dust in about 50m visability. cant be doing the low mount engines any good.

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Cheers from the Desert
Rexy
2000 130 TD5
Oil in the Harness, suspension knock, transmission clunk, engine oil leaks, exhaust manifold leaks, centrifugal oil filter stripped bolts, a/c leaks, door leaks, wouldn't trade it for the world