Join Date: Sep 2009
Location: The Glorious Peoples Republic of New Jersey
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Help me understand. If the turbo stops circulating oil and coolant, these fluids will immediately absorb the turbo's heat. It can't be good for oil and coolant to boil or heat to extremes. I always let my EGT cool to 250*. It takes up to 10 minutes, but I do it anyway. I use a ScanGuageII, so the turbo is probably hotter than where I'm reading, but it's a good indicator. My turbo was replace at 60,000 miles, so somebody before me wasn't treating it right
and I refuse to subject it and (more so) my fluids to this type of heat. Hot kills everything about an internal combustion engine. Never ever let an engine or trans over heat. Things warp, they coke, they burn, etc..... It's no wonder we need to change our coolant diligently - we're burning the
out of it.
Come on experts, tell us what kind of temperature oil and coolant can handle before breaking down. Any Chemical Engineers out there?
coking of oils starts around the 400-450F mark, typical engine coolant will boil around 240F, so the theory is that by idling down your allowing the oils (and coolant) to asorb the the heat from the engine.
bear in mind that the engine will cool down once the engine is at idle in the cold,(well i would make such an assumption who knows with the CR's that can control their exhaust temps.
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