Progressing further on the 3800SC Series 1 swap, and definitely want to change the SC oil. My manual (even Chilton's!) is not much help, it gives me the "use ONLY sythetic oil GM part #xxxxxxx" line. Checking with NAPA's computer system says that 5w-30 oil is recommended, but I want to get a definitive opinion before I drain this thing out. Synth motor oil? Synchromesh? 75W-140?
Oh, and engine/blower are out of a 93 Bonneville SSEi. Thanks in advance!

I'm not positive about these earlier superchargers but I know my Bonneville SSEI 97 Series II uses that special GM oil. I've been using this replacement for it as of late... http://intense-racing.com/M..._Code=3800_Induction

GM offers a specially bottled supercharger oil that they will gladly sell you for about $9.00 for a small bottle and you'll need two bottles to fill the reservoir. IMO, a special oil should not be critical as you are just lubricating gears and bearings but no one seems to know what this special oil is. I'll look up the GM part number for you later today and post it here.

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87GT - with 3800SC Series III engine, 4T65eHD
87GT - 3.4L Turbocharged engine, modified TH125H
" I'M ON THE LOOSE WITHOUT THE JUICE "

when i had my rivi i went to the local pontiac lot and went to the parts counter. and a good fair warning is the stuff smells pretty nasty but its not a hard job to do

Go to the dealership.. for sure.

ZZPerformance sells GM oil and their own.

I dont mean to sound rude but....

ITS JUST TWO GEARS AND SOME REGULAR SEALS IN THERE..... NOTHING COMPLEX

I just used Mobil 1 synthetic motor oil 5W50.

Superchargers do get hot so I wouldn't use regular mineral oil.

..... my supercharger has yet to fail.

Did anybody ever get a positive answer to what is "special" about the GM SC oil? Need to fill mine this week.

Thanks,

Tom

quote Originally posted by Dennis LaGrua: I'll look up the GM part number for you later today and post it here.

Dennis, I have it handy.

GM#12345982

Takes two full bottles (all but the last few drips).
I extracted the old with a syringe and piece of vacuum tube.
$9.85 a bottle at the local dealer.

[This message has been edited by Bubbajuju (edited 08-18-2008).]

The Magnusson Radix (Eaton ) Supercharger on my 2003 Tahoe was supposed to have the oil changed every 50,000 miles using the same weight synthetic oil as recommended by the manufacturer of the engine for your climate.

Regards,

David

Ok FYI guys according to my local dealership for both the ford and GE SC is using AMSOL 0W-30 synthetic (North Carolina climate).

Tom

quote Originally posted by oldfiero: Did anybody ever get a positive answer to what is "special" about the GM SC oil? Need to fill mine this week. Thanks, Tom

Its no snake oil....it smells more like skunk oil