Friends - Go to Walmart or any grocery store and look in the kitchen section. There are lots of little soft plastic ( i.e. unbreakable ) measuring cup thingys that will have multiple markings on them for milliliters and ounces and fractions of cups, etc. I found a great one that even has a pointy little spout so it doesn't drip. I ended up using that one for some additive I'm putting in my tractors but you get the idea. Got a measuring cup in the kitchen ? It has ounces on it. Pour 2 1/2 ounces of water into something and mark it with a sharpie. Empty the water and dry it good. Bob's your uncle - there's your new oil measure thingy.
Lookit- I got some 50:1 TruFuel for my ped then noticed on the tank it says don't use unleaded gas. Crap. WTF ? I started using Trufuel ( dif ratio ) for my chain saw cause ethanol kills chain saws. TruFuel for my 78 Puch Maxi Luxe ? Yes ? No - what say you ?