The Friends of Ferguson Heritage Ltd. - TVO Recipes
Tractor Vaporising Oil was withdrawn in 1974. Requests on the FoFH "Market Place" for TVO recipes
produced some interesting but misleading replies. This page now has
advice from Graham Pressman, who has many years experience in fuels,
and also is deeply involved with Grey Fergies. Readers in the UK are
advised that a licence is now needed to use TVO: see our TVO Licence page (quick, before you need a licence to read).
RECIPE FOR TRACTOR VAPORISING OIL
There must only ever be 2 ingredients in TVO
Petrol (unleaded is absolutely fine for a Ferguson tractor) 98 Octane
28 Second Heating Oil 20 Octane
Aim for an Octane value between 55 and 70
55 if doing very hard work
70 if doing topping and the like
To give you some idea of the sums:-
1 petrol and 1 heating oil comes out at 59 Octane
2 petrol and 1 heating oil comes out at 72 Octane
1 petrol and 2 heating oil comes out at 46 Octane
Petrol on its own is suitable for road runs (with the heat shield removed).
Octane is not the only factor, but is provides a good guide line
fuel is designed to cause ignition by compression and will encourage
pinking. It is not designed to burn in TVO tractors, and no upper
cylinder lubricant is required in these tractors, so do not use
anything other than petrol and heating oil.
Using fuel which
does not burn completely will destroy the lubricating properties of the
oil and that (in a Ferguson TE tractor) will result in wear to the cam
shaft bushes and then loss of oil pressure from cam shaft bushes. Loss
of oil pressure will, then result in damage to the crank shaft.
Lubricating oil in a TVO tractor's engine should be changed according
to the Tractor Instruction book.
and finally, Trevor offers TVO Scones:-
2 Teaspoons of TVO
1/2 lb of sifted flour
Knob of butter
4 oz's of glazed cherries
4 oz's of currents
Mix above ingredients into a thick consistency and roll out to 1/2"
depth. Using a small pastry cutter form into scones, bake in a hot oven
for 15 mins until golden brown.
Thanks, Trev, I'll put one by for later. Don't try this one at home, folks.