Question for the Mechanic:
I've got a ford with an 'EcoBoost' engine. I have had a friend tell me that you shouldn't take the RPM's up over 2500 until the engine is sufficiently warm. I generally don't if I am driving. But the GF is a little crazier. I imagine there is soem sort of truth to this, but without a temp gauge for the engine whats a good "warm up time"?
Thanks.
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