It is difficult to test most chemical products. A truly scientific evaluation requires laboratory equipment and resources we don't have. But once in a while a product like Maxima Suspension Clean comes along. The 20-ounce cans of Suspension Clean have definite and obvious advantages over other aerosol cleaners like brake cleaner or contact cleaner.
Suspension work requires a cleaner that cuts oil, but evaporates quickly without leaving a residue. Generally cleaners that meet those criteria are chemically aggressive. Maxima claims SC is mild on rubber, which is good when working with seals and some types of gaskets. We believe it because SC is easier on latex and nitrile gloves than any cleaner we have used.
It cleans suspension parts quickly and easily, though perhaps taking a bit longer than more gnarly cleaners when parts have caked or dried build-up. But gloves stay unaffected much longer, the cleaner leaves no trace on metal parts, and it won't harm finishes since it doesn't easily remove notes written on parts with permanent marker.
Single cans retail for $7.99, so they are in the same price range as other specialized aerosol products. The smell is not as strong as other cleaners, too, which is definitely welcome. At times I'd like the liquid to blast out harder with more liquid volume, but that is a double-edged sword. If it had more spray power, you'd burn through cans faster, so the can/spray design Maxima chose is best for most people. If you work on your own suspension, you'll love this product.
Maxima Racing Oils: 619.449.5000