Mobil 1 10w-30 with a mobil 1 or wix filter, but preferably mobil 1.
Mobil 1 10w-30 with a mobil 1 or wix filter, but preferably mobil 1.
2005 CCSB Silverado- 5.3
Airaid CAI
True Dual Exhaust
NPTune
3.73 Yukon Duragrip limited Slip Diff.
Started up my newly rebuilt engine with orielly 5w30 with melling zinc additive, after about 6000 miles while on a road trip the oil pressure on the highway was lower than I liked. Every since then I've run 10w40 and oil pressure is about 50lbs while cruising.
Brand is really not important to me anymore. Ran the factory 5.3 in my avalanche till 173k on Mobil 1 and the internals still looked like an old cruddy nasty engine.
The Fleet...
2003 Suburban- 5.4 L59 331CI 10:5.1 Compression -Built by ME
2004 Avalanche- 5.7 LS1 -NOT built by me
2005 Silverado RCSB- 5.7 LS6 -Built by ME
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