Diff fluids

[RCRacing88]

I'm looking to move to diff fluids from the stock greased differentials in my 1/8 electric buggy.

So i'm going to need a starting point for oil weights... I know I will have to tear all the differential parts down F/C/R, thoroughly clean and re-assemble but with oil instead of grease.

If it helps ill share some relevant details below;

Caster EX1 Buggy
Tekin 1900kv motor
Castle Creation Mamba monster ESC
Single softpack 4s LiPo
Running on astro track surface with no jumps just rough sections.

Any input is appreciated

Thanks