Gotcha!

Very cool, did not know GCC spec had oil coolers.

I definitely would want one on the V8's but now with the low temp thermostat temps are perfect IMO.

Having the low temp thermostat yourself, how are your oil temps? I'd be concerned with overcooling. The 4.6 now runs cooler than the 3.0, even punching it in sport.

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04 X5 3.0i auto
03 X5 4.6is