Since technology changes almost on a daily basis, I see not just conventional motor oil anymore. Now there's Amsoil, purple oil, synthetic, regular, etc.
To me oil is oil....regardless of thickness and thinness....made for winter and summer.
So....I'd like to see someone offer a chart that states its purpose(if there is one) and describe what it's supposed to do.
'97 4 dr. Tahoe
Polk Audio MM6501
Wolfram amps 3000.1, 125.4 coming soon
2 Sundown Audio X 15's Tuned @ 30Hz.
Interstate battery/Royal Excelene/KnuKoncepts Kolossus wiring