Difficult gearchange after replacing oil in l700 manual trans

Questions and Answers
1

Changed the gearbox oil recently with some Castrol Syntrans 75W90 GL4 in my 5sp l700. Now gearchanges are rather stiff and 1st to 2nd is really clicky/notchy and will make a small grind when changing too quick. This wasn’t here before and was always buttery smooth with changing gears. Shifting when standing still is a tiny bit better, when it’s warm it gets a bit better, but doesn’t go away completely.

I don’t know what to do anymore, considering I put the same oil in as last change. All the gear linkage bushings are replaced, so I can’t blame the gearlinkage.

Do you think the oil is too thick/thin, or should I go with one that doesn’t have friction modifiers. What do you use gentlemen?

2

Yes, prob to thick. I use Redlone lightweight shock proof at about $25/litre

3

Redline is quite difficult to get in europe even though everybody is praising it, bit of a bummer. Had some people saying to me I should use a 75W80 or some sort with little to no friction modifiers for the synchros to slow down better when locking. I think I should try that first…

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