Had my car in for its second service recently. Typically, they refilled the windscreen washer tank and charged me for a litre of washer antifreeze concentrate. Being an honest bunch they only used half a litre so left me the rest! I got home and came to put this container away to discover that exactly the same thing had happened a year or two ago at my car's first service. I'll be ready for them on the next service!
All that is background to my problem. The washer bottle tells me its contents are concentrate. So what dilution should be used? The label has a diagram which I am totally unable to decipher. Here is a photograph:-
TIA Frank Stacey