Atz ryt!
You can take Penicillin if you are not sick, and it probably won't do any harm....but if you have a Fungal infection, it won't do any good either.
If the engine runs in the proper heat range...you can actually sabotage it by forcing it to run too cool. The spark plugs, etc...are calibrated for a heat range...things like carbon deposits in the engine, excess HC emissions, etc...can all result from making an engine with too much cooling capacity (Like one that can never "warm up"...it can't reach operating temp)
If it ain't broke, don't fix it until it is.
