It’s all in the amount of product used.
This is the main mistake made by many users.
And it’s true, I don’t have any capstan or PTR rollers to judge.
But it is also a product used for many years by projectionists, but no fouling occurs on the projection windows and on the drive rollers.
I have only one regret, it is that I can no longer obtain this product, because it is forbidden to import, because the manufacturer does not give its composition (perhaps a mixture of camphor oil and of solvent with an addition giving it this color).
But let’s not get angry, everyone has their practice.