Thread: Cleaning Vinegar

I have purchased some "Naturally Brewed" cleaning vinegar to use as a cleaning agent for sprucing up some 70/80 year old "Thos Ibotson & Co cast steel" gouge blades.The metal is quite black and there is evidence of slight surface pitting.
Reading previous posts I get the impression that I may need to immerse the blades for 12/24 hours, and then apply elbow grease and a scourer to obtain a bright metal surface.
Should I use 100% cleaning vinegar, undiluted ?
Would a 50/50 vinegar/kerosene (or mineral turps or methylated spirit) mixture be an advantage.
The vinegar bottle says to only mix with water, however I have a recollection that vinegar/kerosene may have been recommended in a past thread.