Okay - they're all fitted up and they do warm up, but I gave them about 10 minutes whilst stood still today and they warmed up to a reasonable warmness, but not what I'd call hot. I haven't tried them on the move yet, but the engine was ticking over.
Do they (the Oxford ones) achieve a higher degree of warmth than I am feeling?
I am wondering if they will get warmer while I am driving along (like a car heater does).
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