I would not characterize all leaks as catastrophic failures. Some can be an annoyance that can be prevented by making sure you have a film of what ever you are trying to keep off your garage floor, on the seal. Typically, one reduces the service life of a seal by allowing some of the seal to dry out or swell. oil and heat exchanger fluids are good examples of these. Other examples are seals used in fuels, where some of the fuel contains ethanol. Ethanol can gel and cause even Viton seals to leak. A good fuel additive (or zero % ethanol gas) can prevent this type of problem. Draining your fuel tank, and running the engine until all fuel is used also helps. Seals in the turbocharger are also a likely candidate to fail, if the oil that drains out of the turbo, while sitting, is not pumped back into the turbo, before operation. This could be catastrophic. Putting a foot on the brake and accelerator, so the engine does not start, but pumps oil through the system can prevent this problem.