Excellent
I haven’t gotten into the shop yet, but that’s what I use in my six speed so that’s some good stuff

High-Performance Ester/PAO Synth-Blend – Provided by Elite Race Fab
Product Overview
Red Line 30505 offers the same high-performance synthetic D4 ATF in a cost-effective gallon size—ideal for full ATF services or multiple-vehicle applications. It combines excellent thermal stability, shift quality, and component protection for automatic transmissions meeting D4 specifications.
Key Benefits:
Cost-effective for complete ATF services or bulk use
Maintains smooth shifting and clutch feel over extended intervals
Strong pump protection and smooth operation in all climates
Excellent performance in cold weather starting
Works with Dexron II/III, Ford Mercon, Chrysler D4, and Allison C‑4 systems
Specifications:
Size: 1 Gallon (3.78 L)
Base: Ester & Polyalphaolefin synthetic blend
Meets/Exceeds: Dexron II/III, Ford Mercon, Chrysler D4, Allison C‑4
Fitment / Recommended Use:
Perfect for:
Full automatic transmission service
Marine, industrial, and heavy-duty ATF needs
Performance builds requiring stable, reliable fluid
Why Buy from Elite Race Fab?
Proven in real-world high-stress and daily conditions
Quick delivery and knowledgeable technical support
Pure, dependable ATF with no marketing fluff