I live in NJ and have had a 1996 E300 for 2 years. In the summer months I run it on straight WVO. No modifications whatsoever. I just dump my filtered WVO in the fuel tank and she drives fine. In the fall I start mixing it with diesel. Usually around 75% WVO and 25% diesel as long as it's above 40* or so. When it get's to the winter time I run it with 75% diesel and 25% WVO. I have had absolutely no issues with it running and driving except she's a little unhappy when I start her up without the block heater. I recently replaced the fuel injectors just for the hell of it and they didn't look too bad. Same with the glow plugs. I just purchased a 1999 because I've wanted the Turbo version of the same car.

I'm planning on doing the same thing with the 1999. Just to test the waters I put about 4 gallons of WVO in the tank (half full of diesel) and she starts idles runs fine, but when I drive I notice the turbo not spooling as fast as when it was one straight diesel. Has anyone else had experience with the 98 or 99's?

Thanks.

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2022 Nissan Frontier Pro4x
1990 Mercedes 420SEL
1950 Packard 8

Previous German cars-
2001 Mercedes SL500
1983 Mercedes 300SD
2011 BMW 328i (manual)
2008 BMW 535xi (manual)
2006 BMW M3 (manual)
1980 Mercedes 300TD
2006 BMW 750i
1996 Mercedes E300D
1994 BMW 740i
2006 BMW 330xi (manual)
1999 E300DT Smoke silver/black 253k
2012 BMW 535i Xdrive M-Sport
1984 300TD-T 304k
1988 Mercedes 560SEL (parts car)
2010 BMW 550i xdrive
2017 Audi A4 Presitge
1979 300SD 313k
2003 E500 189k