I've heard of someone using that method, 70:30 WVOiesel in an older land cruiser. No word back from him yet as to whether his is indirect or direct injection etc (not sure what year his is). He started with closer to 30:70 then gradually worked his way up to 70:30. I'm not sure if he needs to purge the lines or not. I suppose it would depend on the ratio you use. I'm looking at doing the same thing with my disco, more like 50:50 to keep it thin... but i'm holding off till he gets back to me!