how to lower viscosity

[wikki]

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Anyone knows what to mix with silicon oil to lower its viscosity and make it a bit more fluid? Something that wont burn and has hi temp resistance.

the silicon oil is the kind bought from auto shops, the made in japan one with japanese txt on it. yellow box, tube like white container.

[ajlago]

sir i'm using unleaded gas tolower the viscosity. however im not sure if it will be a hi temp resistance. im using this mixture in rc motors and mini 4wd motors.