[Christ]

As if it hasn't been made painfully obvious, the engineers are covering "worst case scenario", and yes, you can easily OVERCOOL your engine by removing the fascia from the vehicle, which would put it outside it's efficient range, which is apparently not what you're going for... so that statement is pointless. Were you going somewhere with this discussion?

You'd bet on my engine needing an overhaul, and you'd probably lose. 10,000 miles is a very short time.

In case you'd like something else to under examine, I also don't change my oil on a schedule. If overhaul was imminent based on my lack of air filter, I should see buildup in the oil, correct? I'll take a pic for you tomorrow. Hell, I'll even text it to you. It's just starting to lose it's golden color - and it's been in there, with the same filter, for ~9,000 miles as well.

A large amount of air doesn't necessarily afford more cooling capacity, either. I'll let you do the searching to quantify that - you might begin to understand how a grille block could make an engine operate more efficiently.

When you really want help, we're here, but you've been afforded plenty of solicited advice/information, and you don't seem to accept it, both here and elsewhere, as I've been informed by others.

Once you figure out whatever it is you really want, please, by all means, show us the Nobel prize in your category.