September 30, 201410 yr comment_456339 Thats good news. Maybe an oil change will improve 2nd untill you are ready for a 5speed.Chas Link to comment https://www.classiczcars.com/forums/topic/50068-260z-u-joint-question-bad-tranny-noise/?&page=2#findComment-456339 Share on other sites More sharing options...
September 30, 201410 yr comment_456351 Never said which oil you chose. As far as synchro help goes I would grade them Valvoline 75-90 plain old gear oil < Redline MT90 < blend of Swepco 201 with ATF. I run Swepco and ATF now and it's great stuff. I'll never use plain old gear oil again. Credit JMortensen for the Swepco advice. Link to comment https://www.classiczcars.com/forums/topic/50068-260z-u-joint-question-bad-tranny-noise/?&page=2#findComment-456351 Share on other sites More sharing options...
October 1, 201410 yr Author comment_456364 Didn't end up changing oil just yet, I didn't lose barely any when I pulled the drive shaft, possibly because it was jacked up so high in the rear possibly because it already low, not really sure. Swepco 201 huh? Is 201 the weight? And what ratio did you mix it? Thanks for the info. Link to comment https://www.classiczcars.com/forums/topic/50068-260z-u-joint-question-bad-tranny-noise/?&page=2#findComment-456364 Share on other sites More sharing options...
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