1: If you go too long without changing your oil, you can drain it out, fill the crankcase to capacity (full on the dipstick, not to the top) with Mercon/Dexron III automatic transmission fluid, run it for ten minutes, then proceed with the oil change as normal. This will clean out any sludge or deposits that have formed and baked onto the inside of the engine.
2: If you drive a car with turbo but no turbo timer, idle it for 30 seconds before you shut it off. If you don't, you risk coking up the turbo oil lines, resulting in a lack of lubrication and cooling. I can't find a good picture, but a turbocharger explosion is not a pretty sight.
3: No TFP thread about uncommon knowledge or little-known "facts" has ever made it to the one-page mark without falling victim to urban legend contamination.
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