Synthetic 5W is exactly the same runnyness as Dino 5W.
If you had an oil leak its because a seal has gone, not the oil you use
Some of us have been running Mobil 1 for well over 100K miles with no problems or leaks at all (and much less wear than others)
Mad Mole
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Mad Moles Mondeo Madness 2L Zetec, Cams, Stage 2 head, Valve work, Powerflow, Unichip, AEM Ram, K&N, Ecotek, 75mm Lower etc.
192 BHP, Faster than a speeding Duratec!
