I am no techie by any means but recently did an experiment with my truck and a vw jetta with blending and it went baaad!
Because of what I read on the internet I mixed 20% gas and 80% clean centrifuged oil. This is oil that I purchased from somebody and I think it is quality stuff. It got to as cold as 15 a few weeks ago and I left a jug of this stuff outside and would check it time to time. Even before mixing, this oil does not seperate or become solid at these temps.
Well I tried this mix in warmer temps like 40's and would compare it in a bottle to diesel outside in a jar. It was not as thin as diesel but better than a motor oil. It did not seperate on its own either.
The truck has 2 tanks, the jetta one. The initial tests had the vehicles running what I would call normal after switching to the blend after the cars warmed up and on freeway runs which is the majority milewise of the commute.
It only took a couple days, but I now believe that using the same filter setup for both sources of fuel, allowed the diesel to continue to wash some veggie downstream after a good purge time on straight diesel.
I did change out the filters, dumped starton in each tank and went back to diesel while tring to get rid of the wvo first. I caught it early in that each vehicle was angry after they sat after a couple days or running, when it came to starting them up and the injection pumps sticking, etc.
I did 2 soaks of atf for a couple days in each ip pump and new filters and now both vehicles appear to be back to normal.
So I won't be doing that again and planned to revisit the topic with the jetta soon when I fix some other stuff, and will redo the truck later when I take the bed off and redo all the hoses, etc.
As far as how both vehicles ran when on the highway, to me they seemed to react to the pedal well, there was a tad different sound I would say but nothing wierd popped out to me. My goal was to get the mileage on the freeway runs, and use the city driving with diesel.
