Some manufacturers claim moly in motor oil increases gas mileage. Is this true?
There is research under laboratory conditions to support the claim. In the past fleet tests have provided evidence of the claim. T.S. Moly has anecdotal reports on its products to that effect, but T.S. Moly-Lubricants, Inc. does not have its own in-house proof supported by a scientific research. Even after conducting a test, it is questionable to make claims that will be valid in applications in the “real world” because of the large number of differences between conditions in the laboratory and “in the field”. The moly used in motor oil should be colloidal to avoid settling out.
