Today I had a cold startup today and my neighbor standing there said that there was a little puff of blue smoke, by the time I got out it was gone although it smelled a little like gas for a couple seconds. I do have a tank with B12 in it now to clean it out. Has anyone else noticed there V8 doing this. I believe this to be from the B12 but just wanted to put the question out here.
Today I had a cold startup today and my neighbor standing there said that there was a little puff of blue smoke, by the time I got out it was gone although it smelled a little like gas for a couple seconds. I do have a tank with B12 in it now to clean it out. Has anyone else noticed there V8 doing this. I believe this to be from the B12 but just wanted to put the question out here.
That's common for the 2005+ Mustangs and nothing to worry about. On your next oil change, use a high quality oil and you won't have that problem anymore. If you have a constant stream of blue smoke at idle or acceleration, that would be a problem.
The Castro Sytec I use is 5w20 Full synthetic. The back says its for Ford 5w20 aplications. In red it says Specially formulated to meet the needs of Ford Honda, and Chrysler SAE 5W-20 service. I have never used any oil that does not meet requirments. And I dont run it hard. So I'm really hoping that the Berryman B12 CHEMTOOL Fuel treatment is responsible for the puff of smoke. However I did check oil level and it was about 1/3 Quart low but is was about 4k mile since the last oil change. I'm running behind do to moving across the country. This car only has 21k miles So I do find it hard to believe its burning oil.
Last edited by Mustang2005; 11-09-2008 at 04:02 PM.
Reason: adding more
Check some of the threads about installing the charge motion delete plates. Some people noticed a significant amount of oil in the intake when disassembled. Apparently it comes from the PCV system (which is normal, the PCV system is designed to route blow-by gasses and oil vapour through the engine to be burned) but it seems at least some of our engines pull rather a lot of oil through. This oil could pool in the intake when the engine cools, then get sucked through and burn off the next time you start it.
Supposedly only those with forced induction need to care about this because a) the higher manifold pressure under boost drives even more oil through the PCV valve, and b) oil will lower the effective octane of the fuel charge - which can be quite nasty for FI engines.
Not everyone seems to have this problem, some people installed the charge motion delete and reported theirs was perfectly clean with no sign of oil. Personally I think it might relate to driving style, especially hard acceleration and engine braking which can create high manifold pressure and vacuum situations.
I installed an oil separator on my PCV return hose even though my engine is naturally aspirated and I find it does catch quita a bit of oil - a couple of ounces a month, or after an afternoon on the track. Since my tune requires 91 octane, I figure it's safer not to have that oil pulling down the octane just when I'm pushing the car hardest. But under normal conditions, a little oil getting through is normal and supposedly won't hurt anything.
The oil burning problem at startup can possibly be eliminated if the engine is run for a minimum of a few minutes every time it's started, especially when the ambient temperatures get colder.
all is normal, Every time we start up the GT's( I work at dealership) they all burn a little puff of blue smoke at startup, Beleive it is caused by short turn ons, and does seem to be more prevalent when colder out as ski stated.. I would not worry about this one bit.
So I'm really hoping that the Berryman B12 CHEMTOOL Fuel treatment is responsible for the puff of smoke. However I did check oil level and it was about 1/3 Quart low but is was about 4k mile since the last oil change. I'm running behind do to moving across the country. This car only has 21k miles So I do find it hard to believe its burning oil.
Stay away from the Berryman fuel system treatment. Instead, use Lucas Fuel System Treatment. I've been using it for years and recommend it to everybody. The best thing about it is that it DOES NOT contain ANY solvents.
Puff of blue smoke 
