The highest boiling-point tier in the range — a fully synthetic, glycol-based DOT 5.1 fluid (not to be confused with silicone-based DOT 5) that remains backwards-compatible with DOT 3/4 systems while giving maximum thermal margin.
| Viscosity | n/a (brake fluid) |
|---|---|
| Base Oil | Fully synthetic, glycol-ether based (non-silicone) |
| Approvals | FMVSS 116 DOT 3/DOT 4/DOT 5.1, SAE J1703/1704, ISO 4925 Class 5.1 |
| Pack Sizes | 1L, 5L, 20L, 60L, 200L |
High-performance driving, track use, or towing, where maximum boiling-point headroom reduces the risk of brake fade under sustained hard braking.
No, and this is a common point of confusion — DOT 5 is silicone-based and not glycol-compatible, while DOT 5.1 is glycol-based like standard DOT 3/4 fluids, just with a higher boiling point. This product is fully backwards-compatible with DOT 3/4 systems.
Yes — being glycol-based and fully synthetic, it's miscible with other fully synthetic brake fluids including standard DOT 4, though topping up rather than mixing during a full fluid change is generally best practice.
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