Wtf! White shit in exhaust manifold (+)

[Mr. Y]

Hi, guys!
Today I removed my turbo and saw something like white coating inside my exhaust manifold. I've removed turbo about 3K miles ago, and there was not such shit. Anybody can tell me, what is it?
First, I thought it is BHG, but this shit is in whole manifold (and not in half of it), so I don't think, that I have BHG in all cylinders.

Another version: some time ago, I've been putting vacuum hoses using silicone spray, and may be some of it was burned in cylinders and caused this white shit.

And the last version: shitty fuel. It is very common problem in Russia, but I see white shit in exhaust for the first time...

And what do you think??

PS: sorry for bad pictures, thay are from mobile..

 

[Mr. Y]

help me please!
any ideas what is it?

 

[gixxer750]

probably fuel additives...at least you know you aren't burning oil

 

[Adjuster]

Yep, you have the same shitty gas in Russia that we have here in the USA. LOL

I have seen similar deposits on my turbo and exhaust. (I'm not burning oil either.)

Don't worry about it.

 

[Mr. Y]

And what about my WB O2? Is it dead now? (I cant' connect laptop right now to see AFR)

 

[Adjuster]

Hope not, If it is, just sand blast that sucker and put it back in. (Tape off anyparts you don't want blasted, and it cleans right up.)

Be sure to blow out all the sand blasting media when your done. Nice thing is your WB sensor is after the motor and turbo, so nothing really could be hurt by a stray grain or two of media.

 

[billspreston01]

I got the turbo off my car and the turbine fan is completely white, while the rest of the inside of the exaust housing is black, and the turbine fan on my other turbo is solid black...think it could be the same problem as the manifold? I use sunoco 94 octane.