Originally Posted by
DmaxMaverick
Mobil 1 is good stuff. I use Amsoil, but know of a lot of folks using Mobil 1 without issues. It would be my first choice, if Amsoil weren't available when I need a change. You'll need 75w-90 for normal use, or 75w-140 for extreme use (hot climate, frequent very heavy towing, etc.).
x2 on this!
But, purty much any synthetic that meets the GM spec will work. I too am running the Amsoil 75w-90 and it's pricey when you include shipping.
I'm thinking next go round I'm gonna try the synthetic Super Tech 75w-90 that Wal-Mart sells it is waaaay cheaper and it meets the GM spec. If you are cost conscious and wanna save a few bucks this might be the way to go.
Jeff
"But officer, I ain't Speedin', I'm just flyin' low"
2001 Silverado 3500 Dually LS Ext Cab, 6.6L Diesel, Banks Stinger Kit, 4" Exhaust, VR Straps, Bilstein shocks, 255/85/16 BFG KM2s
2004 Suburban 2500 LT 6.0L 4x4, Bilstein Shocks, Federico front/rear sway bars
1996 Caprice 5.7L LT1, B4U Suspension, KYB shocks & Hotchkis sway bars, BMR RCA - alas I miss ya.
2013 Caprice PPV 6.0L