Hi, I am new to the forum and am looking for a bit of advice. I have a Country Clipper Edge with a Hydro Gear ZT 2800 transmission. I have just changed the transmission oil after the first 100 hours operation. It was originally filled with 20-50 oil. For reasons best known to my brain I have put in 10-30 oil instead of the recommended 20-50 oil. I just grabbed the wrong container without thinking. Anyway my question is should I drain out the 10-30 oil and replace with the correct 20-50? Will operating the mower with 10-30 oil harm the transmission? My other problem is the oil filters are not readily available where I live so can I just flush out the new ones I used with the 10-30 oil and put them back in? Appreciate any help I can get.