Danny: I have a TG-60Y and put 90 wt in both the pto and drive gear boxes.I filled the pto box approx. 1/2 and the gear box until the oil flows out the overflow-as the manual suggests.When I went shopping for a tiller I chose this one for the overall ruggedness and price.I have used this tiller a lot (and without babying it) and have yet to run into any probs.I also grease the tine shaft bearing frequently and regularly check all the bolts/nuts for tightness. DanB.