As gasoline refiners phase out leaded gasoline, many so-called lead substitute additives have been introduced, and their manufacturers claim everything from anti-wear protection to increased horsepower. Because there are no industry specifications, boaters and RV owners who are attempting to prevent engine damage that can be caused by unleaded gasoline are forced to rely solely on manufacturers’ claims. It is difficult or impossible to determine which product works and which does not, and has definitely created a “buyer beware” situation.
In response to consumer and engine manufacturer concerns, two reports on the effectiveness of fuel additives have been submitted and published by the Society of Automotive Engineers (SAE). The SAE accepts, audits, and publishes test data on fuels, lubricants and other products to be used in American petroleum, automotive and…