8 87Ltd Senior Member Joined May 25, 2001 Jun 29, 2009 #1 Hi, My smog check for CA is coming up and I'm wondering if having the ZDDP in my oil will affect my results. I've been running the car w/o cats but will have em on when the time comes. Thanks,
Hi, My smog check for CA is coming up and I'm wondering if having the ZDDP in my oil will affect my results. I've been running the car w/o cats but will have em on when the time comes. Thanks,
