[hopsing]

Like Roger said, its best to stick with one brand of oil for all the weights. I use all Losi oils myself, Roger says he uses all Associated. It comes down to personal preferance and possibly availability.

The most common oil weights I use here in the California is 25, 27.5, 30, and 32.5. I know you guys sometimes use some heavier weights over there because of the higher bite surfaces you get to run on. If you have a local track, just ask a few of the racers what they run and/or prefer. Also, what size pistons in your shocks can make a difference in what oil you choose to.

Oh, and yes the oil weights are a little different between brands as well. Thats why its best to stick with one brand of oil so that you stay consistent with your tuning. Losi oil tends to be about 2.5w thicker than comprable AE oil. I.E. Losi 27.5w is about equal to AE 30w.