75% used engine oil? How often is this guy changing his oil?

Where would you get large quantities of used engine oil? Does it matter if its oil that was used in gasoline engines (because of the lower viscosity)?
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2001 4X4 Auto SLT Laramie - DANA 60/DANA 70, 3.55's - Isspro Gauges, FP, Pyro, Boost, Trans. Temp. - HBS 2" Leveling Kit - Straight Pipe - Amsoil Nanofiber 4510 CAI - Quadzilla XZT+ - Debadged - 285/75/16 Firestone Destination M/T's
230,000 miles as of 08/09 -

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All Cummins all the time!
Last edited by lvin4jc : 05-31-2008 at 12:32 AM.