my 1994 3.1 turbo diesel 5 speed manual gear box gets hot,only if weather is hot. cold days and at night it is ok and on short trips.if extreme heat the clutch at times slips.the trans is full to the filler bolt.the gear lever gets quiet hot also.if on long trip as soon as it starts cooling in the evening all heat dissapates,what is my problem?

kevin scott, May 2014