1:1 is wasteful, 4:1 is plenty strong IME...
DILUTION:
Heavy Strength 4:1
Medium Strength 10:1
This all surface cleaner is ideally suited for today's fast paced, high volume, detail operations where one simple solution is needed for a variety of cleaning needs. It provides mixtures for heavy cleaning of engines and tires, fast interior cleaning, as well as low foam ratio for use in carpet and upholstery extraction machines. Leaves carpet clean, smelling pleasant, and the fibers soft with no sticky residue. Safe for clear plastic, glass and leather