Eric: Ive been wanting to use this too, but held off because of engine-damage concern. Another factoid which i found thru Google : because of the increased solvency/chemistry of the biodiesel, there was a chance of dislodging any petro-diesel clumps which might be clinging to tank walls or tubing,... and might clog up the injectors. I think this is in addition to "coking". I had planned to run Bidi this season exclusively. (i get a headache every time i catch the downwind from the tractors, and i'm assuming that will change when i switch to bidi with much fewer toxic particulates) . There has been a toronto company advertising for the past year for delivery of bidi locally.(Mostly for bigrig companies) I just dont know yet if they'll deliver a drum, or i can pick it up. My understanding is that it is not practical below freezing because of gelling. (That's ok for most farmers'seasons anyway.) Is that another reason for suggesting preheating? And, are you saying that coking is inevitable without preheating? The vendors don't mention any alterations required to use bidi. Again, i don't know their mix ratio. What proportion diesel/bidi would be correct to avoid the pre/post idle and heating which you mention? If i can avoid running an extra fuel-tubing coil through a preheat location, it would be preferable...especially since tractor's aircooled. Thanks for any further info.... .manfred
----- Original Message ----- From: "Eric Myren" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Thursday, February 06, 2003 7:37 AM Subject: Re: Biodiesel
