I have a parts cleaner which currently uses a petroleum-based solvent which goes by the names of Stanisol and Stoddard solvent. This is a very common solvent that works well for removing grease and oil. Unfortunately, it is time to change out the solvent since the container has a lot of dirt accumulation.
The question is: what do I replace the solvent with? I am thinking of using the orange oil-based solvent that is currently available. Since this is organic in nature and thus, biodegradable, will it 'spoil' after a time? Does it come as a concentrate or is that another type of solvent?