Petro oil to synthetic oil change.

[rick.willoughby@cox.net]

I have a Bach horn that is almost new. It was oiled with petroleum based valve oil. I want to switch to my favorite synthetic oil. Is there a recommended procedure to make the change? I have heard just simply to start using synthetic could cause the valves to gum up by mixing the 2 oils.
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RW
Bach Stradivarius Artisan
Getzen 3850 Custom Cornet
Yamaha 631G Flugelhorn
XO 1624 Trumpet
Phaeton PHTP-3000 Pocket Trumpet
64 Olds Special Tri Color Cornet

[mm55]

1. Despite the terminology, the great majority of synthetic oils are petroleum-based.

2. I was advised by a repair tech that Hetman synthetic oils are compatible with non-synthetic petroleum oils. I switched all my instruments from Al Cass Fast oil to Hetman #2 oil several years ago, without any gumming-up or other problems. But a thorough cleaning before using a new oil may be a wise move; that's what I have done for new horns since I converted to Hetman.
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'75 Bach Strad 180ML/37
'79 King Silver Flair
'07 Flip Oakes Wild Thing
'42 Selmer US
'90 Yamaha YTR6450S(C)
'12 Eastman ETR-540S (D/Eb)
'10 Carol CPT-300LR pkt
'89 Yamaha YCR2330S crnt
'13 CarolBrass CFL-6200-GSS-BG flg

[AJCarter]

[cgaiii]

When I switched over to Hetman several years ago for some horns (my professional grade horns), I had each horn professionally cleaned before making the switch and specified the oil to the person doing the cleaning. If your horn is reasonably clean, I would think a home cleaning, including careful cleaning of the valves to remove old oil would be sufficient. (I still use Yamaha synthetic on my intermediate Yamaha -- mostly sitting in closet -- because I always have. I use Blue Juice on my Mack Brass bass trumpet as recommended by Mack Brass and on my old Olds Ambassador (just to keep it moving), because the valve tolerances are not so fine.) My understanding is that mixing oils can be problematic so I never do.
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Bb: Schilke X3L AS SP, Yamaha YTR-6335S
C: Schilke CXL, Kanstul 1510-2
Picc: Kanstul 920
Bb Bugle: Kanstul
Bb Pocket: Manchester Brass
Flugel: Taylor Standard
Bass Trumpet: BAC Custom
Natural Tr: Custom Haas replica by Nikolai Mänttäri Morales

[adc]

You can mix all you want . Just like syn oil mixes with non syn oils in a vehicle its the same in other areas.

In terms of oils there is Group I to Group V. They all mix with each other. Group IV is PAO oil Group V is other which is mostly esters. Group III and III+ is considered synthetic in the U.S. Group I/II oils are na for valve oils.

If for some mysterious reason you have a problem just wipe the previous stuff off the valve and bore.
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Too many Old Cornets to Count

[Crazy Finn]

[dladore]

Not sure when going from petroleum to synthetic but if going the other way, you should completely clean the valves. Here is what Getzen said when I wrote to them on a similar subject:

"The only caution is that when using a petroleum based oil, DO NOT switch to synthetic without FIRST totally cleaning the valves, casings etc. of the previous oil before switching and visa versa. The two types do not mix and will cause valve action problems if mixed."

Dan in NC
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Getzen Eterna Proteus 907S Trumpet (2019)
Getzen Capri Trumpet (1986)
Getzen Capri Cornet ('68-'71)

[mdarnton]

FWIW, i switched from Getzen oil to Ultra-Pure in my 907.months ago after the monthly bath, no problems. No one doesn't clean their horn regularly, right?

.......Right????

[Aspeyrer]

[Crazy Finn]