My tech and I fired up Superblack earlier this evening, to test things out before letting her cool down again and FINALLY install the new banjo bolt and burp bolt washer, purchased earlier from John John. For the first time ever, though, we noticed after she had started that she was emitting a bit of "fog "from both exhaust pipes. It was not blue or black, and didn’t appear to be coolant as it had no odor of it or “oily” feel when a hand was stuck into it and nothing was actually dripping from the pipes. From all appearances and smell, it seemed to be condensation. However, the outside temp was hovering at almost 70 degrees, so it didn’t seem to be the condensation one would expect on a “cold day”. As she had before, she also seemed to be taking her time to warm up – after about 5+ minutes of fast idling her temp gauge was only in the middle of the “blue” zone. So, possibly that was in fact normal condensation we were seeing until she finally gets fully warmed up?
One thing is I had dumped about 1/2 a bottle of “Sta-bil” fuel stabilizer and fuel system cleaner (also helps to break down Ethanol deposits, IIRC) in her a couple of weeks earlier when I topped her tank off (the last 5 gallons or so) with premium fuel. Could that also account for her performance today?
I’m a bit concerned also as to whether Superblack is taking longer than she should to warm up, and had posted about that concern before. How long at idle should a 5.3 facelift take to fully warm up? My tech did notice that the metal water pipe that runs along the passenger side on top of the engine (next to the fuel rail on that side) was in fact warm to the touch, but the one that runs along the driver’s side was not at all. Again, is that normal, at least until the engine is fully warmed up? Or, is there maybe some kind of blockage issue going on? Also wondering if she is in fact experiencing delayed warm up if possibly one or both thermostats had been removed by the PO for some reason, or are stuck open.