Interesting, the link to ECS tuning says they sell "Castrol SAF XJ" in the text but the picture of the can is the newer Transmax limited slip 75w140. I have bought it and it doesn't say SAF XJ anywhere on the can ;-)
Who knows? Look at this!
https://www.ecstuning.com/b-genuine...tial-fluid-saf-xjfm-5-liter/83222282583/ https://www.bimmerworld.com/Fluids/...00ml-bottle-E46-M3-E9X-M3-F8X-M3-M4.htmlor in the UK
https://www.ebay.co.uk/p/1009509672Castrol keeps saying successively, every few years, that a newer and better fluid has, first, replaced the SAF-XJ, then the replacement is replaced and so on.. It was/is also called Syntrax. When I spoke with BTR Dowunder, I got a curt, "we made it clear what you should you use"! , without elaboration. So considering how rarely this the change is needed and how imortant the right fluids are, I use the BMW product. (label above), especially now that the Morgan BTR axles have gone the sad way of the Morgan Salisburys :(, who wants to take a chance? I have used the BMW with BTR approval and haven't had a issue in 100,000 kms.
I discretely did not ask them about anything else. gmg
P.S. Capacity is 1.75 Pts/1.0 Lts/2.1 US Pts
