amsoil
Appreciate your consideration of AMSOIL and sorry I missed this first time around. I am a forum vendor and all sales of AMSOIL via my dealership benefit the forum and my raceteam. Ordering info for AMSOIL via my dealership (which does include the banner link to the left) can be found via the link in my sig.
AMSOIL products I recommend for the C5/Z06 (All meet GM specifications):
Engine oil:
High Performance
AMSOIL Series 2000 0w30
Daily Drivers
AMSOIL SAE Synthetic 5w30
Oil Filter (part SDF32):
AMSOIL SDF Oil Filter
Transmission Fluid (meets GM Dexron III requirements for both A4 and MN6/12):
AMSOIL ATF
Gear Lube:
AMSOIL Severe Gear Extreme Pressure Synthetic 75w90
Preferred Customers order at wholesale:
AMSOIL Preferred Customer Program


C66 Racing #66 NASA ST2, SCCA T2
AMSOIL Dealer (Forum Vendor)
AMSOIL Preferred Customer Program (Members buy at Wholesale - a savings of about 25%)
Is it under warranty?
If your car is under warranty, I would recommend, in this order, these AMSOIL products which meet the GM Standard 4718M for your engine:
AMSOIL Series 2000 0w30
AMSOIL SAE Synthetic 10w30
AMSOIL SAE Synthetic 5w30
If your car isn't under warranty, and depending on what viscosity you currently run, I'd consider these oils which do not meet GM Standard 4718M but do meet API SL standards:
AMSOIL Synthetic 5w40 European Motor Oil
AMSOIL SAE Synthetic High Performance 10w40
For the tranny:
AMSOIL ATF
For the diff:
AMSOIL Severe Gear Extreme Pressure Synthetic 75w90
P.S. Dropped you a PM with info on the AMSOIL Preferred Customer Program














