G'day Just wondering what the difference is between the two oils. Looking at the Caltex Australia site they appear to be the same thing, the only thing I can see is different is one specifically refers to pre Sept2002 us emissions specs. I've been to two Caltex stations and one stocks the gold and the other the 400, with neither bottle having the energy saving circle on it or mention of low emissions (ie not Delo LE). Can anyone shed some light on the difference between the two oils? After I change the next lot of oil, I'm going to give Delo 400 a crack on my 250 to see what its like. NB: Not after responses about the merits of using diesel oil in the bike, I've read over the "which oil is best" threads and come to the conclusion that this oil is worth a try at least. Thanks. Thanks.