Lexus RX 300 Exhaust

Valve Cover Gasket Replaced. Blue Smoke Comes From Exhaust Only After Sitting 10/12 Hours From Work, And Not Everyday.

I Have A 2000 Rx 300. There Is White Smoke That Comes Out The Exhaust And The Car Does Not Seem To Drive The Same. What Could The Problem Be...

It Blows Blue Smoke When First Starts Occasionally And Then Typically Stops Completely. The Motor Sounds And Runs Very Good But This Does...

My Lexus '99 Rx300 Won't Go Into Second Gear Unless The Car Is All Warmed Up (temp Needle Past C), Which Take 8 Minutes. Is That Jsut Age...