I am guessing my valve stems are slowly going bad but it is very slight and manageable. The only time I see smoke is when the car is idle for a long time and I shut it down and start it back up (like when I get gas). This only happens when I am idle for more than 10 minutes and it does not always happen. Anyhow I found this ad in craigslist (see below), anyone here try this person? Thanks.

https://newhaven.craigslist.org/aos/...224718896.html

Greg