Well after tons of research I decided on Rust Veto 342 for the undercoating on my soon to arrive TRD Pro. I went ahead and ordered a 5gal pale and the
LC/LX Undercoating Rust Proof
Goodbye Venture and Nightshade, hello Trail Hunter?
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Rust Veto - 342 (Cosmoline) Undercoating, Page 5
Rust Veto - 342 (Cosmoline) Undercoating
Undercoating — Carson Undercoating LLC
Rust Veto - 342 (Cosmoline) Undercoating, Page 3
Rust Veto - 342 (Cosmoline) Undercoating, Page 5
Rust Veto - 342 (Cosmoline) Undercoating
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How to apply RP-342 cosmoline anti-rust protectant
Rust Veto - 342 (Cosmoline) Undercoating
Army Green thread: let's keep it green!, Page 27