GET's proprietary process produces saturated chain of carbon mainly in
the 16 to 20 carbon lengths that mimic crude oil distillates in
structure. Biodegradability is defined by an ASTM specification that
puts the material for 28 days in contact with environmentally present
bacteria and measures the proportion that is broken down back into
elemental form.  The conditions of the engine and the environment are
vastly different.  So, no, it doesn't biodegrade in the engine.  We
have engine tests now that show that G-Oil meets or exceeds the
performance of ASTM reference oils in these conditions and have an
ongoing program to continue to obtain additional test data.