I need some help tracking down an oil leak in my '89 S14 engine with 60K miles. I found oil buildup on the thermostat housing and around chain tensioner housing. I cleaned everything off, let run for 30 minutes and not a drop of oil anywhere (small seep rear of valve cover that runs down the back eventually, has been there long time). I drove for an hour, and still nothing. One week later and find oil again - What is group consensus on what needs resealing/common oil leak sources?