Search this group for discussions about it. There's nothing absolutely
required to pour vegetable oil into your tank and start using it for
fuel, but there are a considerable number of gotchas, the seriousness of
which vary depending on how handy you are.
There are a ton of different conversions, although none of the ones
offered for sale in the US (maybe that's a big assumption?) are truly
complete. A company called Elsbett in Germany makes replacement
injectors which take it all the way home. A local shop had a kit from
them that someone else was going to have installed, and it looked pretty
That said, I've been running 30-60% soybean oil from Costco in my car
with its totally stock fuel delivery system, a '79 300TD, and it's been
running pretty well although I definitely notice it's slightly less
powerful on the stuff, and a "thick" mix makes it a bit tougher to start
in the mornings (those chilly San Diego mornings where it's a chilly 40
degrees F! heh).
This link journeytoforever.org/biodiesel_make.html will give you a lot
of good info. Even though it is dedicated to biodiesel, it still
gives good info and lets YOU decide what to do. Yes, I am biased
towards biodiesel, but I won't fault you for what you want to do.
Have fun with it!!
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