Couple things -

-Supposedly heated diesel is bad. Decreased lubricity with temperature is what I am told. We are repeatedly warned over at Frybrid not to run heated diesel in our 2 tank kits.

-There are a couple folks over at the Frybrid.com WVO forum who have installed water injection setups for this very purpose. Most of the ones I am familiar with are on Powerstrokes, Cummins, and Duramax engines - but some have done it on a 617. I have no idea what a good flow rate would be for the 617, but there are water injection nozzles and tanks out there for use.

And don't forget if you are just injecting water you need to worry about ice.

__________________
-------------------------------
'85 300D, 'Lance',250k, ... winter beater (100k on franken-Frybrid 3 Valve Kit)
'82 300D, 'Tex', 228k body / 170k engine ... summer car
'83 300TD Cali Wagon 210k, wife's car