Hi everyone,

I'm preparing to flush/replace my power steering fluid. The specs show the correct fluid is Land Rover STC50519.

When I ordered some from a local mail-order shop (they get their parts from the local Land Rover dealer about a block away) they sent me the Rock Oil PS fluid with a sticker on it with the LR part number.

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Quote:

Rock Oil is the manufacturer of the OEM fluid and currently Land Rover is only supplying us with this fluid in this bottle while they wait on their official packaging.

Manufacturers change suppliers quite regularly based on who provides the cheapest price for the spec. If it came from an LR dealer I wouldn't worry. In fact as long as it's compatible with the seals on the LR system, I'd use any fluid in there. There are only a few cars I've ever had and worked on where you can tell the difference between PAS fluids, and these have been highly modified cars with stiffer racks using OEM pumps that basically overwork the fluid.

FWIW the LR dealer in Inverness fitted pattern front springs to my dad's car as they couldn't get genuine so I suspect their supply chain issues are fairly multi faceted and unlikely to be solved any time soon. Rock Oil probably weren't the supplier ten or more years ago but if the oil fits the spec then LR will happily stick the sticker on the bottle and run with it. Rock Oil is generally good stuff though, we used to use their stuff for rebuilding dampers and it was one of the more consistent fluids when you put it on the dyno and worked it to high temps.