I was at the local Real Canadian Wholesale store and found 10W30 Tech2000 100% synthetic for less than $6.00 for 4.4l jug(It's normally only sold at Walmart in Canada so I don't know how they ended up with it). I grabbed 4 because I just can't help myself. Any idea how good this stuff is? I think Safety Clean makes it but I don't know how it compares to other name brand syn. I can't decide if I should just use it in the riding mower or what.