brem

I've always used the same (noname) oil (well, actually it's the local music store's brand oil...)

does it really make a dramatic difference?

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brem
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NYTC Stage 1 California Light - Wedge 3C cup w/ Warburton 7 backbore mpc
Bach Stradivarius Bb Model 37 * #124xxx (circa 1975) - Schilke 15B mpc
Yamaha YFH-731 Flugelhorn #000xxx - Yamaha 14F4-GP mpc