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Eaton M122 supercharger oil replacement

96 views 2 replies 3 participants last post by  Raptor131  
#1 ·
I bought an 8oz bottle of Eaton supercharger oil from supercharger.com. This is OEM spec for the M122.
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I got a turkey "flavor injector" for $3.
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And one foot of tubing from a roll at the hardware store for $0.10. The tubing was still bent in a circular fashion from the roll and helped get into the corners when sucking out the old oil.

I placed a towel behind the pulley belt to catch dribble.

I removed the plug on the front of the super charger, passenger side next to the snout with an Allen key. I inserted the curved tube and sucked everything out with many passes. The result was dark stinky, fish smelling dirty oil.
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Next I took a full syringe (1.5oz) of fresh oil and washed the inside of the resivoir. Squirting and sucking up again several times, aiming up and whatever direction. While not dirty like the original, it was tainted.

I did notice some small particles in this but nothing alarming.

Lastly I put the new oil bottle and squeezed until it began to "weep". I collected the oil tears with another rag. I tightened until tight plus 1/8 turn.

Wiped up the dribble, fired it up and checked for leaks, all good. Test drive, all good, checked again for leaks...good.

Today I opened the plug again and checked the level...all good.

It is a subtle change, but more smooth sounding and slightly improved throttle response.

Maintenance is key! This took me 15mins and ~$3 for my suction device. Superchargers with smaller pulleys work harder and checking this is super simple. If you haven't checked in awhile I would.
 

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#2 ·
Good stuff Miller! Thanks for sharing and helping the next guy! 🍻
 
owns 2020 Ford Mustang Shelby GT500 CFTP
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