BYD Sealion 6 — 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 · 22 August 2026.
The Sealion 6 was our last BYD fluids gap — no manual in any download centre we checked — until the official Australian owner’s handbook surfaced. It was worth the wait: this PHEV breaks three family patterns at once. Its rear drive unit takes Shell S3-ATF-MD3 — the first non-Castrol driveline oil on any BYD we cover; its coolant fill changes with climate (7.5 L hot regions, 7.0 L cold); and its tyres return to the Seal’s staggered 250/290 kPa that the Sealion 7 abandoned.
Fluids — official specifications
| Item | Specification | Amount |
|---|
| Engine oil — 2WD (BYD472QA 1.5L) | C5 0W-20 grade or above | 3.3 L with filter change |
| Engine oil — 4WD (BYD476ZQC 1.5T) | C5 0W-20 grade or above | 3.9 L with filter change — two engines, two fills, one model |
| EHS transmission gear oil | EHSF-2LV | 3.0 L (no filter) · 3.5 L (with filter assembly) · 4.1 L overhaul — the Shark 6’s three-tier pattern, smaller |
| Rear drive-unit gear oil (4WD only) | Shell S3-ATF-MD3 — not the Castrol BOT oils of every other BYD | 0.8 L |
| Brake fluid | SINOPEC HZY6 | 970±50 ml — the family’s smallest reservoir |
| Coolant | Ethylene glycol anti-rust | Hot climates 7.5±0.5 L · cold climates 7.0±0.5 L — the only climate-dependent fill we’ve documented |
Source: official BYD Sealion 6 owner’s handbook, Australian edition (Vehicle Data pp. 230–234; archived with checksum). The oil-brand trap, upgraded: after BOT-383 vs BOT384, the family now has a third answer — Shell ATF — and “the BYD gear oil” is officially a meaningless phrase. Match the fluid to the model, every time.
Powertrain
| Engines | 2WD: BYD472QA 1.5 NA, 81 kW · 4WD: BYD476ZQC 1.5T, 102 kW |
| Motors | 2WD: TZ220XYE 145 kW · 4WD: front TZ220XYS 150 kW + rear 120 kW — all permanent-magnet |
| Battery | Blade LFP, 54 Ah |
| Towing | 750 kg braked and unbraked · 150 kg tongue — this is not the ute; plan accordingly |
Workshop data
| Tyre pressures | Front 250 · Rear 290 kPa (235/50 R19) — staggered like the Seal, not uniform like the Sealion 7; the family now splits 2-2 on this and equalising remains the predictable mistake |
| Alignment (kerb) | caster 2.24–2.28°±0.75 — SUV geometry, nothing like its sedan siblings; full values in the archived handbook |
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.
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. Fault-code behaviour varies between markets, model years and software versions. Last verified: 22 August 2026.