I had the white bottles of the Castrol LMA and bought a newer car that recommended synthetic, so I proceeded to look it up and saw black bottles. Ordered two, then upon receiving them I compared the white and black bottles. Duh, both the same synthetic. I exclusively use in all my cars, including my track MINI S, with no problems. I have used silicone only in newly refurbished brakes on show cars, at customer request only, not a cheap job.