well i was at the chevy dealer and while getting some parts i noticed a 4oz. bottle of gm supercharger oil, i picked it up, as i have a '07 ss supercharged, but am not sure where to squirt it into the supercharger or even of how to tell if mine is possibly low?? can someone help me out here, this is a new car for me and am learning the little in's and out's still, thanks, i guess i should have asked them, but my local dealer parts guys only seem to know what is on the comp. screen, they are not knowledgable nor does it seem that they care if you get help or not, no wonder gm went down, what a shame

 

prepare for an argument, it happens all the time on the supercharger oil debate.

other eaton blowers, like the m90 on the 3800s, and the small blower on the minis, have a specified oil change interval for the supercharger.

the eaton blower on the cobalt does not have a specific interval for oil changes identified. the official gm service manual states that the blower is sealed for life, and that the oil is not intended to be changed.

no official capacity has been provided for the blower, in terms of oz. the specific reference i've seen most often is 3.8 oz, or just to the bottom of the drain plug hole (when the supercharger is removed from the car and sitting level.)

the sc oil is clear to slightly goldish going in. some have stated that their sc oil was black at 5k miles - when i checked mine at 100k (w/ stock pulley), it was slightly lighter than clean motor oil.

f you're really worried about it, or have a smaller than stock pulley, the best bet is probably to remove the blower to do a full drain and change. otherwise, i'd probably not mess with it.

as far as checking the level, there is no dipstick. you'll see a hex head cap screw on body of the blower on the passenger side of the car, just in front of the snout, if i remember correctly. to add oil, remove screw and squirt. to remove oil, you'll have to have a long, thin hose and a transfer pump, unless you pull the blower.

 

thanks alot, i wonder why the chevy dealer had at least 10 bottles of this stuff on the shelf?, i thought maybe i'm missing a required service. i'll return that oil and get my $11 back, i don't want to take it off and mess with anything if it's not a normal service issue.

 

can anything bad happen if u put a little too much oil, 3.8 oz seems kind of exact and hard to measure

 

too much oil is never good!!

and If I remember correctly the m62 requires 6oz of oil.

 

It is only 6 if you take the snout off. Before I installed my SC kit recently, I changed the oil while it was on the bench and it was about the 3.8 oz.

 

3.4 OZ. Period from a dry fill. Eaton says to change it every 15k-20k miles. For about $11, it is super cheap insurance.

Go ahead and argue...

This info was from the Eaton engineering team.

 

LOL do NOT over fill your S/C.... do a search there is a HOW TO on it... but there is a small port around the snout area of the blower... that is where you add the oil....

But you only use a SMALL amount, that whole bottle is good for 2-3 changes. Call a GM tech and have them pull the spec sheet for oil amounts.

But honestly you prolly don't need to change the oil unless you are planning to port it and you need to drain it anyway!

 

I have the specs from Eaton somewhere, but I know that a dry fill was somewhere around 3.5 oz. If you drain it, catch the drained fluid so you can replace the exact amount of fluid that comes out. When I spoke to Eaton about the fluid replacement they made it very clear that IF you change the fluid you must put the exact amount back in.

If you don't put enough fluid in you risk the gears getting hot and wearing. If you put too much you will blow the seals.