I can't answer that one, when I started using veggie oil I clogged a filter suggesting that it loostened up some gunk, but it could easily have been a coincidence. It is not clear (to me and others) whether veg oil cleans the fuel system.
Biodiesel on the other hand does have a cleaning side effect so you could find your local station that sells a biodiesel mix and burn that. You'd end up with a cleaner system and a "green" car. Just carry some extra filters when you start...
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1983 300td 240k (down with bad tranny)
1984 300d 222k (daily driver) "Olive"
1997 GMC K2500 105k (sled dog limo)
"The scenery in ANWR is as spectacular as the Grand Canyon and the wildlife is more impressive."
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