There are varying opinions on that. Don't listen to GM. If you baby it and treat it right, the SC will be the last thing left after your car falls apart. I don't just change mine. I flush it. And I do it once a year. It'* cheap and easy, and with the added stress the smaller pulley puts on it, I think it'* worth it. I think 30,000 miles would be minimum, and if you don't know when it was done last, do it soon.

There'* a thread here in forced induction on this topic. Read some other opinions on it. That SC is nearly bulletproof, but only if you take care of it.

What is the differance between changing it and flushing it? Is there tech info on this somewhere? Thanks

How long can I drive with my coupler making noise? and will it hurt anything else if I just let it rattle for awhile. It only does it at idle and i'm gonna get it fixed as soon as it warms up.

I don't think it'* a huge issue. You just don't want it to completely fail, because then plastic parts will be bouncing all around inside the nose cone gears. I think people have driven around with that for a while, though.

I would check the supercharger oil.

I agree. When the coupler starts making noise, it'* usually an annoyance. I wouldn't let it go more than 3 or 4 months myself. This is a subjective opinion, as I don't have the luxury of hearing yours.

As a general rule of thumb, if you don't know when the last SC oil change was, do it now. Protect the investment.

I just got a syringe and ordered 2 bottles of SC oil from ZZP. When it comes in I'll be changing it.

My oil was low. When I removed the allen screw/plug which is 3/16 on my 2000 ssei, I couldn't even see any oil.

Does having a smaller pulley cause it to need more oil?

Nope.

Heres one for ya. I see that GM sells special "Supercharger Oil" I would like to flush my oil out and replace with some Amsoil Synthetic..but the question is...whats the "Secret Ingrediants"? What kind of oil is this? 5W30? SAE30? 20W50? IS this Oil HAVE to be this special GM Oil?

Yes it is special. It contains fatty acids, phosphoric acid, and a few different types of esters. It is bulletproof and I would not use anything else in there.

Probably 25% of the cars here (out of over 2 thousand) are supercharged. Not one of them runs anything else. We've also never had an oil-related failure. Why would you want to change (actually, we've never had a mechanical failure of a supercharger at all).