H1 hummer 1994 6.7 chevy diesel Submitted by an Anonymous Greaser on Mon, 2010-05-03 13:28 Can my 1994 hummer with a 6.7 chevy diesel engine run on veg oil Reply to this post 1) you need to be concerned Submitted by an Anonymous Greaser on Tue, 2010-05-11 17:45 1) you need to be concerned with rubber components on vehicles built before 1998 2) veg oil needs to be heated for best results, otherwise problems will arise over time 3) try journeytoforever.org reply The rubber components would Submitted by an Anonymous Greaser on Wed, 2010-08-25 04:41 The rubber components would only be affected by biodiesel. WVO wont have the affect on rubber that biodiesel does. Look at the older Mercedes Diesels that are converted to WVO and run great for long periods of time. Be careful with journeytoforever.com some of what they say is great, some of the info/research is out of date....I don't think it's been updated in a few years! reply Reply to this post Your name Comment * Location * What code is in the image? * Enter the characters shown in the image.