BYD Sealion 7 — Fluids, Capacities & Specifications
Written and edited by
Ethan Cole, Editor-in-Chief ·
✓ Technically reviewed by
Daniel Wei Chen — Senior Chinese Automotive Diagnostics & Repair Specialist, Sydney · 24 October 2026.
The Sealion 7 shares the Seal’s platform and its gear oil — Castrol BOT-383, not the BOT384 in the Atto 3 and Dolphin — but not its tyre pressures. Where the Seal runs staggered 250/290 kPa, the Sealion 7 runs a uniform 290/290, rising to 310 at the rear when towing. A tech who “knows BYDs” from the Seal will set the front 40 kPa low; one who knows the Atto 3 will order the wrong oil. Check the sticker, match the number.
Fluids — official specifications
| Item | Specification | Amount |
|---|
| Rear drive-unit gear oil (all versions) | Castrol BOT-383 | 1.55±0.05 L |
| Front drive-unit gear oil (AWD only) | Castrol BOT-383 | 1.6±0.05 L — the front holds slightly more, as on the Seal |
| Brake fluid | HZY6 / DOT4 | 1.15±0.05 L |
| Motor-controller coolant | Glycol OAT long-life | 6.05±0.2 L (RWD) · 6.65±0.2 L (AWD) — well above the Seal’s 4.8/5.3 |
Correction note: We withdrew “−40” from the motor-controller coolant: neither Sealion 7 manual we hold prints it. We also removed a pointer to the toe values in the Middle East edition of the manual, and we now give the battery chemistry and the motor model in the manuals’ own words. See our
corrections log.
Source: official BYD Sealion 7 owner’s manual, Middle East edition (Vehicle Data pp. 202–206; archived with checksum). BYD’s Australian download centre did not list a Sealion 7 manual at the time of writing — mechanical specifications are model-level, but if the AU edition surfaces with different values, we’ll say so here. The BOT-383/BOT384 split: same rule as the Seal — match the oil number, not the brand badge.
Powertrain — the Seal’s mixed-motor AWD, carried over
| Rear motor (all) | TZ200XYT — permanent-magnet synchronous, 230 kW peak |
| Front motor (AWD) | AC asynchronous (model YS210XYA), 160 kW — the same deliberate PMS+induction mix as the Seal |
| Gradeability | RWD 30% · AWD 50% |
| Battery | Lithium iron phosphate (LFP), 150 Ah — identical rating to the Seal |
| Consumption | 17.0 (RWD) / 17.9 (AWD) kWh/100 km NEDC · 19.9 / 21.4 WLTP |
Workshop data
| Tyre pressures | 290/290 kPa uniform · rear 310 when towing a trailer — not the Seal’s staggered setup |
| Tyres | 235/50 R19 + 255/45 R19 (staggered sizes, equal pressures) · or 245/45 R20 |
| Brake discs | front 32 mm (min 30) · rear 20 mm (min 18); pads front 12 mm (min 2) · rear 6.5 mm (min 2.5) |
| Alignment (kerb) | front camber −0.5°±0.75 · caster 6.09°±0.75 · rear camber −1°±0.5 |
Disclaimer: Information on this page is general guidance only and does not replace the manufacturer’s official documentation or the judgement of a qualified technician. Never open, touch or work on any orange high-voltage component. Specifications vary between markets and production years. Last verified: 22 August 2026 · Next re-check: November 2026.