Thread: Tune-up for 3.8 Supercharged 2002 GTP

I would defintely do the standard, oil/filter, plugs/wires, air/fuel filters, and get a PCV filter for the supercharger (2 bolt plate on the charger covers it). I use Mobil1 10x30 syn, Delco filters, cheap plugs wires with NGK TR55 plugs, Delco fuel filter, and Spectre air filter. PCV was from Autozone, don't remember the brand.

Service the tranny, filter + 7/8 qts of Dex3 or Dex6, re-use the factory gasket if you can. Its designed to be re-usable, the crap gasket that usually comes with aftermarket kits are not, and they tend to leak. I use the Delco filter and fluid.

After these I would save and wait then change the LIM gaskets, valve cover gaskets, coolant elbows, S/C and T/B gaskets, new injector o-rings, and do a full coolant flush and re-fill (Dex or Green is up to you) at the same time. Make sure you get the metal LIM gaskets, not the standard plastic compound replacement ones.

Then you should be good to go on fluids, minus the P/S and Brake fluids but they should be ok.

As far as the GM Supercharger fluid goes tho.... (yes I'm about to go there again)
http://www.grandprixforums.net/remov...il-2-4906.html
Bottom of page 2 shows my bulletins from work (Parts Sales Rep @ GM Dealership) for use of Mobil1 5w30 in place of the GM S/C Fluid when fluid is not available. The dealership I work at, doesn't stock it, nor does any dealership within 100 miles. Its just not used enough to require us to stock it. So we have options. If you notice the bulletins, it states for the old M62 blower, but I have verified this still stands for use in the newer M90s, same gears, coupler, seals, bearings. Same fluid to be used between the 2 blowers, so if it can replace it in one charger, it can replace it in the other.
Should you wish to spend the +/-$20.00 for 2 bottles and have it locally, more power to you. If you have to order it and wait, you may consider this. Several including myself use it. I use a syringe and suck out the old oil every other oil change and replace with new 5x30 syn Mobil1. Blower runs fine. But up to you. just giving some options and opinions.

Thanks TL I didnt know where the PCV valve was exactly or the fuel filter. Do the NGK TR55 plugs have same heat range as the 606's and do they last longer than the 15k miles? Really thankful for the re-use tip on the tranny gasket. I was not aware that was even possible. I will check it for leaks and if non than I will re-use for sure. I will consider the use of Mobile 1 5w30 oil in the SC. I don't even know if the SC oil is available around here or not? Would Lucas help? Im all about saving money as long as Im not cutting costly corners. I love opinions and advice. I'm new to this car and want to do it justice as best as I can afford.My sons life could depend on it.

Originally Posted by TLSheff

I would defintely do the standard, oil/filter, plugs/wires, air/fuel filters, and get a PCV filter for the supercharger (2 bolt plate on the charger covers it). I use Mobil1 10x30 syn, Delco filters, cheap plugs wires with NGK TR55 plugs, Delco fuel filter, and Spectre air filter. PCV was from Autozone, don't remember the brand.

Service the tranny, filter + 7/8 qts of Dex3 or Dex6, re-use the factory gasket if you can. Its designed to be re-usable, the crap gasket that usually comes with aftermarket kits are not, and they tend to leak. I use the Delco filter and fluid.

After these I would save and wait then change the LIM gaskets, valve cover gaskets, coolant elbows, S/C and T/B gaskets, new injector o-rings, and do a full coolant flush and re-fill (Dex or Green is up to you) at the same time. Make sure you get the metal LIM gaskets, not the standard plastic compound replacement ones.

Then you should be good to go on fluids, minus the P/S and Brake fluids but they should be ok.

As far as the GM Supercharger fluid goes tho.... (yes I'm about to go there again)
http://www.grandprixforums.net/remov...il-2-4906.html
Bottom of page 2 shows my bulletins from work (Parts Sales Rep @ GM Dealership) for use of Mobil1 5w30 in place of the GM S/C Fluid when fluid is not available. The dealership I work at, doesn't stock it, nor does any dealership within 100 miles. Its just not used enough to require us to stock it. So we have options. If you notice the bulletins, it states for the old M62 blower, but I have verified this still stands for use in the newer M90s, same gears, coupler, seals, bearings. Same fluid to be used between the 2 blowers, so if it can replace it in one charger, it can replace it in the other.
Should you wish to spend the +/-$20.00 for 2 bottles and have it locally, more power to you. If you have to order it and wait, you may consider this. Several including myself use it. I use a syringe and suck out the old oil every other oil change and replace with new 5x30 syn Mobil1. Blower runs fine. But up to you. just giving some options and opinions.

Originally Posted by falcongt

Thanks TL I didnt know where the PCV valve was exactly or the fuel filter. Do the NGK TR55 plugs have same heat range as the 606's and do they last longer than the 15k miles? Really thankful for the re-use tip on the tranny gasket. I was not aware that was even possible. I will check it for leaks and if non than I will re-use for sure. I will consider the use of Mobile 1 5w30 oil in the SC. I don't even know if the SC oil is available around here or not? Would Lucas help? Im all about saving money as long as Im not cutting costly corners. I love opinions and advice. I'm new to this car and want to do it justice as best as I can afford.My sons life could depend on it.

The NGK TR55s are 1 heat range colder than stock, but they are iridiums like the factory plugs so they burn hotter than a standard copper core and last alot longer, but they run about the same price as a standard iriduim plug (+/- $10.00 each i think).

The GM Supercharger oil is GM# 12345982. Call to a local GM Dealership and have them check the number, alot of dealers have a locator so if they don't have it, they can see which dealer close keeps it in stock. If like at the one I work at, and 100 miles is too far to drive for oil, use the Mobil1 5w30. Do not add lucas to it. Just the synthetic oil and change every 5-10k.