We have an 86 toyota landcruiser sahara turbo diesel automatic, previously transmission fluid leaked out while going up a hill. Repaired twice, lasts a few days, then leaks out again afew days after repairs. We would appreciate some advice.

If there is a vent on the transmission, make sure it's clear. If leaking from a shaft seal, always put a bit of grease on the seal surface when installing. Make sure there isn't a deep wear groove on the shaft and that the shaft itself is not wobbling as that would indicate that an internal support bearing has failed. If leaking from a pan or cover gasket, make sure the part is flat and not warped, If slightly warped you can often use a double gasket there. If there is a vent on the transmission, make sure it's clear. If leaking from a shaft seal, always put a bit of grease on the seal surface when installing. Make sure there isn't a deep wear groove on the shaft and that the shaft itself is not wobbling as that would indicate that an internal support bearing has failed. If leaking from a pan or cover gasket, make sure the part is flat and not warped, If slightly warped you can often use a double gasket there.