Engine Oil Leaking problems of the 2004 Chevrolet Cavalier

After consulting licensed mechanics, and one such nationally certified airplane-engine tech-mechanic, being ranked in the top three (3) of the nation's aviation mechanics industry from 1981-1983 period (and still has qualifications authority), [and before making a fool of myself], the consensus/verdict [by these professionals] was agreed that it borders on criminality (and I quote), that automakers are using plastic coverings and seals, as the engine's oil filter housing caps. Known (industry-wide) to exert pressures in 'pounds per-square-inch' ( lbs/psi) and extreme temperatures that these plastic materials--such as the oil filter-housing caps, cannot withstand. They also strip. It was explained to me by the certified airplane mechanic that, to understand the effects of pressurization theory behind that technology, and the knowledge that fifty-50 to sixty-60 pounds (lbs/psi) of pressure per-square-inch is being given to the plastic caps from the engine's internal combustion will cause any plastic cap, housed under such pressures to fail. He said he was surprised it did not cause engine failure two(2) years after being newly purchased. He said the science that industry insiders do not want us to know is that the proper semi-precious metals, as aluminum, copper and the like are perfect conductors of electricity and heat, allowing the metal to expand/contract according to temperatures and/or torque pressurization of the 50-60 lbs/psi being release to housing. Even tampered steel would work as it would conform. But plastic once overheated will remain in warped state causing oil leakage in that area. This depressurization of engine physics and chemistry, a couple-to-few years later results in engine's crank case housing depressurizing to the point of cracking after pistons themselves giveway rendering engine being irreparable. My car should have flipped @ 70mph.