First HPDE with this car on 1/30

[jpilone]

I am not sure what fluid type is in the diff or trans. If they aren't synthetic, I want to change them.

Any educated guesses? I will use off the shelf local parts store products (mobil 1, royal purple)

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[ForTehNguyen]

I changed my diff fluid to mobil 1 75W90 LS fluid, takes under 2qt. For the transmission I used royal purple synchromax