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LINN SONDEK LP12 BEARING OIL: Alternatives...

Here’s a little journey I recently completed.

 

I have read endless threads on the importance of the correct lubricant for the LP12 bearing, so I decided to experiment.

 

For reference, my LP12 is circa late 1980s.  Fluted plinth, pre-Cirkus bearing and Ittok arm.  It was originally a Valhalla model, which I upgraded to the OriginLive DC Motor Kit.  My beloved Shelter 501 II LOMC cartridge completes the ensemble.

For many years I have been running good quality automotive transmission oil in the main bearing.  I have experienced no problems, but had a few ideas I wanted to try.

 

I cleaned the old bearing, removing all of the old red transmission oil with Qtips; and inspected the bearing.  It all looked okay with a very slight inclusion on the polished bearing face, where most of the platter load is carried.  Not too bad for a 30+ years old machine, I reckon.

THICK BLACK GRAPHITE GREASE:
First up, I tried some very heavy, thick and gluggy, black graphite grease.

I wanted to introduce some “drag” on the motor to see if it provided any useful sonic advances.

The outcome was terrible.  There was just no way I could get the speed stable – even after running the combo at 78rpm overnight – something that is easy with the infinitely variable OriginLive motor controller.

Out it went.

 

SILICONE SIL0200 OIL:

Next up, I wanted to try an oil that provided massive vibration dampening.  After another thorough bearing clean-up job – with the aid of white spirits to break down the black graphite grease – I opted for high quality 200 (medium viscosity) Silicone oil and got spinning.
Right from the start, speed stability was spot on, so I progressed to serious listening.
Frankly, I could not believe what a massive difference the silicone oil made to the sound.  On the upside, the sound was purer and more refined than I could ever have imagined.  Like a load of artifice had been removed.  On the downside, dynamics were severely impacted, to the point that I simply could not live with it.

Out it went.

BERNINA SWISS SEWING MACHINE OIL / NULON E20 MODERN ENGINE TREATMENT:

Finally – after another thorough bearing clean-out job – I opted for the popular thin machine oil option.  I went with the Bernina Swiss Sewing Machine Oil, but added the Nulon E20 Modern Engine Treatment oil additive in the hopes that I could halt any further bearing wear.  The final mix was 80% Bernina / 20% Nulon.

(Always loved that 80/20 rule that applies to so much of life…)

Right from the get go, speed stability was spot on, so again I settled in for a serious listen.
This was fantastic!  My LP12 had never sounded better.  The dynamics were back in full measure and much of the purity that the silicone had revealed, also remained.

Everything just clicked-in and sounded superb.

It stayed.

 

Job done.  Time to sit back and spin the black stuff.  Loving it!

 

…But ever the fiddler, I am thinking about giving the later Cirkus bearing a try.


128x128sondeknz
cd318
2,636 posts
 
I tried something similar once  and like yourself and too noticed a big improvement. I was surprised at how much of a reduction in friction there was.

However in the end paranoia got to me, remembering stories about how the 'black oil' was necessary to repair the constant bearing housing damage caused by such a heavy load.

On the other hand I did wonder how less friction could cause more damage?! Then there was the question of why Linn would use an inferior oil. 


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sondeknz's avatar
sondeknz OP
21 posts
 
VIRIDIAN

I agree with you.

Having a heavy lubricant that creates some sort of "drag" or resistance has little or nothing to do with how well it prevents wear on the bearing.
(I accept that there is probably a relationship there...)

That said, my bearing with LINN WHITE (Teflon) sleeve and SILVER bearing face, performs much better with the thin oil brew - than it did with the black graphite grease.

I didn’t run the black graphite grease long enough to comment about its wear prevention.

And I guess I will find out over time, if my current BERNINA/NULON oil brew prevents wear. Frankly, I can’t imagine much wear taking place - while it sounds so darned good!
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