Local Advance Autoparts store orders Valvoline 20W50 synthetic for me but it has been a while since I got some. I use the synthetic oil in my Ingersoll GTs, but I'm down to just one Ingersoll at the moment.
Scag dealer sells Wolfs Head 20W50 dino oil so I get it there for my Scag Tiger Cub. The only synthetic motor oil that they sell is 5W30 for B&S engines and 10W30 for other makes.
You need to know that when you remove the hyd system oil filter that the hyd oil reservoir will drain out thru the filter housing, so be prepaired for this. This is also an easy way to change the hyd oil, just let it drain into a container large enough to hold 3 or more quarts. All you will actually change is what oil is in the filter and the reservoir, about 2 1/2 to 3 quarts.
As for the engine oil drain, there should be a clear hose hanging down under the machine that is connected to the drain valve. The drain valve isn't removed when turned, it is a valve that opens and lets the oil drain out thru the hose into a drain pan sitting on the floor.
I use an oil withdrawal system which sucks the oil out thru a tube. The dipstick is removed and the tube is put into the dipstick tube to the bottom and sucks out the oil this way. The withdrawal system has a 6 quart capacity and a vacuum pump mounted on the top. The suction tube connects to the tank and is about 6 feet long. I also us it on my vehicles to change engine oil and transmission oil.
Small engine manufacturers have made design changes to their engines where the dipstick tube mounts into the oil base so the withdrawal tube can go all the way to the bottom of the oil base and withdraw the maximum amount of oil.
Mad Mackie in CT:biggrin::laughing: