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BMW Technical Q&A, Primarily R65 / Re: R65 1982. Fork seals failling when riding on cold outside temperature .
« Last post by georgesgiralt on January 25, 2025, 03:13:31 PM »Hello,
I dig into my notes and saw that I was using Motorex 2.5W fork oil for ages.
Can't find the reasons and the rationale for switching to Bel-Ray and changing weight.
The nearest shop sells Motorex oil and has the whole range available (as he serves a lot of makes and a lot of enduro bikes).
So maybe I was told that 2.5 was too thin for the seals to function properly ?
I dig into my notes and saw that I was using Motorex 2.5W fork oil for ages.
Can't find the reasons and the rationale for switching to Bel-Ray and changing weight.
The nearest shop sells Motorex oil and has the whole range available (as he serves a lot of makes and a lot of enduro bikes).
So maybe I was told that 2.5 was too thin for the seals to function properly ?