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Having recently changed the supercharger oil on my Jaguar XKR, I thought it was time for the V. The supercharger was replaced under warranty 3 years ago, the original one started to sound like a rock crusher. But now it was time I thought. So I asked my friendly parts dealer, and he sent me two small bottles.

But where to do it? I can't find any plug in the front. A plug at the rear I've found, but google tells me not to change at the rear. And service manual has nothing about changing supercharger oil, all I can find is "sealed for life" etc.

So should I send the oil back to the parts guy? Or?
 

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I put new bearings and oil in when I did my engine rebuild but it is not a service item. There is an allen head plug on the back of the supercharger with the gears in it. It would be very difficult to empty it while it is on the car so I would just leave it alone. The way I emptied it was taking the entire unit apart. The rocks noise you heard originally was not coming from the gears in the back, it was coming from the known issue with the isolator in the front. AFAIK nobody has had failures from the gear box.
 
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Remove the Allen head on the back and purchase a kit to suck out the old oil and insert the new oil.

 

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There is no oiling on the stock CTSV supercharger.
I put new bearings and oil in when I did my engine rebuild but it is not a service item. There is an allen head plug on the back of the supercharger with the gears in it. It would be very difficult to empty it while it is on the car so I would just leave it alone. The way I emptied it was taking the entire unit apart. The rocks noise you heard originally was not coming from the gears in the back, it was coming from the known issue with the isolator in the front. AFAIK nobody has had failures from the gear box.
Remove the Allen head on the back and purchase a kit to suck out the old oil and insert the new oil.

One of these is not like the others.
 

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Thanks, Karch.

I assumed the bottom of the hole was the proper level, but I could not find a confirmation.
I recently acquired a 30K mile takeoff blower & I wanted to be sure it wasn't drained or tampered with.

I heard it held 6oz, so I picked up two 4oz bottles.
When I drained it, the level was at the bottom of the fill port & a measured 4oz came out, so I refilled it to the same level.
The cover was not removed, I only dumped it out through the fill plug. Since it was so clean, I did not feel the need to pull the cover. Not sure how 2 oz supposedly stayed in there. I even spun it for a while & rechecked it because I was paranoid about the missing 2 oz.
 

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Thanks to this thread I learned something today.
 
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