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Older diesels do in fact have all the same problems as the gasoline engines with current fuels. In the diesel world, the mandated addition of biodiesel to fuel has resulted in the same issues (deteriorated hoses and seals, corrosion of some metals in the fuel system and lowered fuel economy). I love diesels and have owned them for decades, but they are just as much affected by this issue as gasoline engines. One side note after running biodiesel for a year I had a running problem with a 90 Landcruiser turbo-diesel. I started changing out hoses and filter housings etc.... but to no avail so I pulled the pick up tube on the tank and found the screen was completely "filled in" with a membrane of something that required brake cleaner to remove..... well on a positive note, I'd never seen the inside of a fuel tank of a twenty year old vehicle look so pristine. Cheers
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