For these reasons, healthy levels of magnesium have been linked to deep, undisturbed sleep. Consequently, low levels of magnesium can contribute to frequent nighttime wakings. Magnesium deficiency has been linked to several insomnia-inducing conditions, including restless leg syndrome (RLS) and night terrors.
Scuffing is another condition that can damage pistons. Scuffing is often the result of overheating, but loss of lubrication, detonation and preignition can also be contributing factors. When an engine runs hot, the pistons swell. This reduces the clearance between the piston and cylinder walls. The cylinder bore can also distort adding to the problem.
Good news, everyone! Nope, you're right on the money there. If the turbo is not forcing air into the engine, the engine is sucking air which is what causes vaccuum. A negative reading on a boost gauge is meerely telling you how much vaccuum your engine is pulling. Don't call it negative boost though...