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Discussion Starter · #1 · (Edited)
I researched the forum and can't find the name of the hydraulic fluid to use for the trunk closer.. Some say just use ATF.. Can I use the hydraulic fluid that is used in the front hydraulics on my 750?
 

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So I did more research on this topic. It seems like the OEM BMW trunk hydraulic fluid is actually Aeroshell fluid 4 or 41. You can buy the shell fluid for much cheaper.


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Confirmed aircraft hydraulic fluid is the same. Few years ago replaced my leaking cylinder and added Rexol fluid. No leaks and has worked great. Think the quart I got online was under $20
 
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