1. Wiki article summarizing VW TDI emissions cheating so far, click here. Anyone logged in can edit it by clicking the "edit" button on the upper right of the page. It's a reference so please post any comments or questions in the forum. It's a work in progress so feel free to update it!

used motor oil for fuel

Discussion in 'Biodiesel general' started by furyfins, Mar 27, 2011.

  1. furyfins

    furyfins New Member

    Mar 27, 2011
    1997 jetta
    I am new to this site. I had been running between 50 and 90% filtered to less than 10 microns used oil picked up from auto shops and ran through my 3 stage filtration system. Have ran a truck a 7.3 mechanical injected ford turbo diesel with nearly 200,000 miles on this for approx. 20,000 miles with minimal trouble. Recently have been putting about 10% of this filtered oil in my girlfriends 97 tdi jetta. Have seen no change in how it runs. Has anyone experimented with used oil in TDI's? I am thinking about uping the % as the weather gets warmer.
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  2. chittychittybangbang

    chittychittybangbang Administrator

    May 23, 2007
    2006 Jetta TDI
    You could but as you have hinted at, the wear inside used motor oil isn't good for the long term life of the engine. I don't know how fine it can be filtered. On your 97 it's certainly more tolerant than a 2004+ PD engine or new common rail engine, not just in the fuel injection but the emissions filters.

    You mentioned "minimal trouble" :D Would that be worth it with the girlfriend if her car has a problem :D

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