Manual: In a manual transmission, the problem is not so much the fluid degradation, but rather fluid contamination. This contamination occurs over time as the synchronizers, bearings and gears in the transmission wear out. The resulting metal particles then float around in the lubricant.
A lot of mental illnesses can have a genetic component, yes (eg. depression, bipolar disorder, anxiety, antisocial personality disorder, etc.).
Your family has a history of developmental disability, birth defects, and/or mental retardation (See general and pediatric genetic. counseling, page 8). â¢ Your family has a history of mental illness (See psychiatric genetic. counseling, page 11).