BYD Dolphin — Fluids, Capacities & Specifications
From the official Australian manual (archived): the Dolphin’s fluids follow the Atto 3’s pattern with two twists — the gear-oil quantity depends on which motor your variant has (450 mL for the 70 kW Dynamic, 600 mL for the 150 kW Premium), and the brake fluid listing names HZY6 alone. One more variant-split hides at the rear axle: the rear brake-disc wear limit depends on which rear suspension your car has.
Fluids — official specifications
| Item | Specification | Amount |
|---|---|---|
| Gear (reducer) oil | Castrol BOT384 | 450±50 mL (Dynamic 70 kW) · 600±50 mL (Premium 150 kW) |
| Brake fluid | HZY6 (the manual’s sole listing) | 1,100±100 mL |
| Motor coolant | Glycol OAT, −40 grade | 3.1±0.2 / 3.3±0.2 L by variant |
Source: official BYD Dolphin owner’s manual, Australian edition (Vehicle Data pp. 186–189; archived with checksum). HZY6 is the Chinese national brake-fluid standard equivalent to DOT4-class fluid — BYD lists it as the specification here; on the Atto 3 both names appear. The coolant circuit serves the drive system — dealer territory.
The suspension split — check before machining or buying discs
| Front brake disc | 23–25 mm serviceable range |
| Rear disc — twist-beam rear suspension | 9–11 mm |
| Rear disc — four-bar-link rear suspension | 10–12 mm |
| Pads | front 2.5–8 mm · rear 2–6.5 mm |
Even the rear-camber alignment value splits by suspension type (−1.38° vs −1.07°). Which one is yours follows the variant — a workshop quoting one blanket number for “a Dolphin” hasn’t read this table.
Powertrain — official data
| Motors | TZ180XSF (70 kW/180 Nm, Dynamic) · TZ200XSQ (150 kW/310 Nm, Premium — the Atto 3’s unit) |
| Battery | Blade LFP — 135 / 150 Ah by variant (100% charging routinely appropriate) |
| Official consumption | 12.6 / 14.2 kWh/100 km (NEDC — flagged) |
| Tyres | 195/60 R16 · 205/50 R17 — 250 kPa all round |