Guest Miller1212 Posted March 5, 2012 Share Posted March 5, 2012 What would cause grinding of gears shifting into 3<SUP>rd--</SUP> only after the transmission has warmed up?<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p> Link to comment Share on other sites More sharing options...
jvelde Posted March 6, 2012 Share Posted March 6, 2012 Miller1212, I had the same issue when shifting into second and third. I started using SAE250 gear oil in the transmission and that really reduced the problem. I think the modern SAE weights are thinner than the older oils and when they heat up the gears start clashing more because things are spinning faster. I still get a clash into third sometimes, but if I double clutch it rarely happens. Hope this helps your Texas friend.John Link to comment Share on other sites More sharing options...
Bhigdog Posted March 6, 2012 Share Posted March 6, 2012 Synchronizer is worn.................Bob Link to comment Share on other sites More sharing options...
Guest Miller1212 Posted March 6, 2012 Share Posted March 6, 2012 Thanks for your reply. Much appreciated. GM Link to comment Share on other sites More sharing options...
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