Slide Lubrication--professional

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Hetmans is notorious in some circles for the waxy yellow residue that it leaves behind. The last time I had my euph chem cleaned, the tech applied Hetmans to the valves (the first and ONLY time I've had Hetmans on my valves). When I went to re-oil them (with Blue Juice) a couple of weeks later, there were waxy rings around all the valve ports, so ... no Hetmans for me, thank you very much.

I've been using Yamaha Synthetic since Feb, and I've noticed that there is more crud in the bottom caps than when I used conventional oils. I suspect that this is because: (a) I don't need to oil my valves as frequently as I did with conventional oils; and (b) I no longer squirt oil down the leadpipe and blow it through the horn at the end of each practice/playing session, as I did when I was using conventional oil, so the crud has a chance to accumulate instead of getting washed away every couple of days.