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If your local Texas Weather has been dipping down to near freezing... once your Suburban V8 Engine is shut down... the Natural Condensation of Water Vapor as a by-product of combustion in the Blow-By gasses will cool down
rapidly and condense in the upper regions of the Motor at the Highest points.
Older, High Mileage Engines with more Blow-By occurrence due to Carbon Trapped Rings will
NOT display this phenomena during the hotter ambient air seasons because the higher temperatures give the water vapor the chance to completely escape before it can condense.
The Time for Raising an Alarm would happen if you find that your Crank-Case displays a "Milk-Shake" appearance when the Motor Oil is pouring
pell-mell out of the lower engine and into a Drain Pan. Such events are proof positive of Coolant Leaks into the Motor Oil either due to a Cracked Cylinder into a Waster Jacket... or via a Leaking Head Gasket.
As long as the bulk of the Motor Oil in your Motor is normal in appearance and lubricity and you are not finding Oil Droplets in your Coolant Reservoir ...this discovery should not cause you any further concern. All of this happens because Hot Air Rises...and the water vapor in it moves this way as Light Steam and the Oil Catch Can is the
Last Stop in the Journey.
A Compression Test will give you a strong indication as to WHY so much Water Vapor made it that far due to Worn or Carbon-Trapped Piston Compression Rings. An ACDelco TEC (
Top Engine Cleaner) treatment in tandem with pouring a Big Bottle of Chevron Techron in through the Fuel Tank would not be a bad idea for addressing this issue. You would see a modest improvement in compression and a dip in your Fuel Consumption with a bit more power from performing these applications.
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This has probably been covered in "clips and phrases" in various threads throughout the site, but maybe we can collect valid advice and how-to's here, as well as clear up some concerns I have: I've seen multiple references to "Top End Soak" for these platforms. I believe these to refer to the...
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