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Originally Posted by mickey356
As an afterthought - I still can't wrap my head around the "getting the car to operating temp" thing. How can it be an issue if you don't always get your car to 194F when driving? Regardless of how long you drive the car if the car starts cold (needle at the bottom of oil temp gauge) you still have to get it up to operating temp. So doesn't the engine have to run "cold" until it gets to temp?
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It's an issue because running the engine creates combustion byproducts (some corrosive) that won't be fully burned off if you don't reach full temp. Start a typical engine and notice how much water comes out of the tailpipe until it's hot. That's not distilled water.
Another example: when you grill outside and shut down your grill after cooking, it's full of grease and gunk, right? But if you close it up and let it keep burning, eventually the crap burns off into soot. Not only is it easier to clean, but the grill will last longer.