Thanks all for your kind words

@ Łukasz Bąk
I'll add some (more) mettalic texture, just arrived Mig's 'Gun Metal pigment'

@ richard que
Yes, in this case I have used the Vallejo 'Chipping Medium' for the white wash. Also some pigments and 'Sand & Gravel Glue', diluted with white spirit. Lately I prefer this instead of any 'Pigment Fixer'.
Same dilution (white spirit) with the 'Fresh Engine Oil'.
Everywhere it is overdoned, I clear some of the texture, with the same thinner. My small secret is to not do all together these processes to all over the model, sides/parts. I.e. you can leave more 'white' a fuel drum, you may add some oil to an other etc.
@ Joe
You are right, no I do not want this to be my last one!
Thanks a lot, my English are not so good indeed
@ Bill Florig
Waiting your news
@ Gerald Owens
That's why a coin always helps!
Cheers.