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A. BG Syncro Shift is a synthetic API GL-4 SAE 75W-75 gear lubricant for manual transmissions, transaxles and transfer cases. Provides anti-wear protection, low-temperature fluidity, and is safe for steel/brass/copper alloys.
A. Syncro Shift II (PN 792) is the updated formulation with enhanced film strength and expanded OEM coverage. Syncro Shift (PN 790) is the original. For newer applications, II is generally preferred.
A. BG Syncro Shift covers many manual-transmission and transfer-case applications requiring API GL-4 SAE 75W-75. Confirm specific OEM spec against bottle markings or BG technical data before use.
A. GL-5 gear oils have higher EP additive levels that can attack brass synchros in manual transmissions. GL-4 (BG Syncro Shift) is the manual-transmission spec. Use GL-5 (BG Ultra-Guard) only for hypoid diffs.
A. For Haldex coupling oil service, confirm specific fluid grade against OEM specification. BG Syncro Shift II (PN 792) is more commonly listed for Haldex applications — verify before use.
A. Most passenger-car manual transmissions hold 1.5–3 litres. The 946ml is a partial fill — for a full service, plan for 2–3 bottles or a larger workshop pack.
A. Next-day delivery is available on most products and will appear as an option at checkout where eligible.
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