Originally Posted by ShinyShoe
I totally get that. But if this time your mix turns out to be more like 45:1 or 40:1 and your plugs are oiling and so next time you are a bit tight on the oil to reduce the risk of oiling, but a dodgy measure anyway means you are now at 60:1 which is a bit lean causing more wear and tear.
I'm sure 125ml rather than 126ml is fine. Afterall how did you measure the petrol volume to match up... Although fuel pump at a filling station is -0.5% to +1% accurate.
It's very complicated for no reason don't mix into part filled tanks have a spare tank a Jerry can will do do a mix in the Jerry and fill your tank from that if you don't use it stabilise for next time/season most tanks have a fill line which states how many litres fill to that and add oil