ZF Lifeguardfluid 6, the factory-spec ATF for ZF 6HP six-speed automatics in BMW, Audi, Jaguar and Land Rover. Six liters, enough for a full pan service.
A ZF six-speed that shudders at light throttle, takes a hard 1-2, or has never had its "lifetime" fluid changed needs the fluid it was calibrated around, not a universal ATF. This is genuine ZF LifeguardFluid 6, ZF part S671.090.255, the factory fill ZF approves for its 6HP family in BMW, Jaguar, Land Rover, Audi and other cars. You get six 1-liter bottles, enough for a typical pan and filter service on a 6HP.
In a 6HP the fluid is the hydraulic medium the mechatronic uses to apply five shift elements, the lubricant for the planetary gearsets, and the friction partner for the clutch packs and the slipping converter clutch. ZF's data sheet says the friction behavior was tuned specifically for these transmissions, which is why a fluid that is merely "compatible" can change how the shifts and converter lockup feel. ZF lists it as an amber fluid with a viscosity of 26.8 mm2/s at 40 C and 5.6 mm2/s at 100 C, and a pour point of -51 C.
Check the level and condition first. ZF's oil change procedure tells you to stop and look further if the drained oil smells burnt or the pan holds large chips; at that point new fluid will not save worn clutches. If the fluid is merely old and dark, a service is the right repair. Our 6HP fluid type and capacity guide covers which variants take this fluid and how much, and the BMW 3 Series 6HP fluid change guide walks through the level check step by step.
ZF's lubricant list TE-ML 11 approves LifeguardFluid 6 for the 6HP19, 6HP21, 6HP26, 6HP28 and 6HP32 families, including most X (all-wheel drive) versions. There are exceptions that must be filled with LifeguardFluid 8 instead: the 6HP19X in the Audi Q7, the 6HP26A61 behind the Audi W12, the 6HP28AF, and some 6HP19A units depending on their parts list. The same list cross-references OE fluid numbers, including BMW 83 22 0 142 516, Jaguar Fluid 8432 and Land Rover TYK500050. A ZF 8HP does not take this fluid; it needs LifeguardFluid 8. Read the ZF tag on your case, and send us your year and VIN if you are unsure. Parts for these units are on our ZF 6HP collection page.
ZF calls this a lifetime fill, but still recommends a change at 150,000 km (about 93,000 miles) and sooner for towing, heat or an unknown service history.
| Fluid spec | ZF Lifeguardfluid 6 |
| ZF part number | S671.090.255 |
| BMW OE number | 83 22 2 220 445 |
| Volume | 6 liters (six 1-liter bottles) |
| Transmission family | ZF 6HP19, 6HP21, 6HP26, 6HP28, 6HP32 |
| Type | Full synthetic automatic transmission fluid |
For a typical pan and filter service, yes. A full dry fill after a rebuild takes more, so check the capacity for your exact unit and order extra if you are filling a rebuilt transmission.
No. The 8HP needs ZF LifeguardFluid 8, and ZF does not approve mixing them. Some 6HP versions, like the 6HP28AF and the Audi Q7 6HP19X, also need LifeguardFluid 8.
ZF's lubricant list cross-references LifeguardFluid 6 to BMW oil number 83 22 0 142 516, along with Jaguar Fluid 8432 and Land Rover TYK500050.
ZF recommends a change at 150,000 km, about 93,000 miles, and earlier for towing, high heat or an unknown service history.
It often helps when the fluid is just old. If the drained fluid smells burnt or the pan holds large chips or lining material, the clutches or valve body need repair and fluid alone will not fix it.
With the car level and engine idling, fill at the side plug until fluid runs out, cycle the gears, and set the final level within ZF's temperature window, roughly 30-40 C on most units.
