Luv Dmax 2008, throwing speed 5th.

Greetings, I have a Luv Dmax 3.5 to gasoline of 2008, little use ... 2000km ... and it has thrown the 5th elocity sometimes, being in constant acceleration at a speed between 100 and 130 kh ... byian I guide me ... practically the truck is new, it was stored from 2008 to today ... that was acquired and began to use ... thanks to those who can contribute something ...

Look if it really has little mileage, the most thing that occurs to me is that it is the 5th -synchronizer that is stuck to the pinion so allows this change to jump, if so you should change oil, remember that the luv use engine oil in the box or if these are not trained to repeat the operation of putting and taking out the 5th in stop

Thank you very much Hector, I will take into account your recommendation and I will do the respective maintenance ..