My Tucson automatic transmission is lazy feels like the gears are slipping and the car has no power. I changed the transmission oil with the specified SP3 oil and still no change. The engine is revving fine there is just no go and the feul consumpsion is very high.

 

How many miles are on the car? Was the transmission serviced every 30,000 miles prior to oil changed you just made?

 

It has 132 000 km on the clock and I bought it second hand with 117 000 km on the clock. So I can't say if it was serviced or not although it has a service record. What happend is the car overheated deu to a broken radiator and it was running like a dream before that. The car was fixced and since then the gearbox was not the same. The mechanic told me it was becaause of the overheating that some cooling fins in the gearbox got damaged and now it does not have enough pressure that is why it is slipping.i