Quote:
Originally Posted by Chris.Guerrero
Hey Isaiah92260 – For older Chevy vehicles (30-40 years old), we recommend Shell Rotella T Triple Protection 10W-30 or 15W-40 motor oil. They’re both API service rated for gasoline engines (currently at the API SM level). In fact, they’re formulated with additional anti-wear agents as compared to today’s API SN/GF5 gasoline engine oils (approximately 1200 ppm of zinc in the Rotella versus 800 ppm of zinc in the API SN/GF5 engine oils). This extra added anti-wear is ideal for the flat tappet engine in your Chevy. Hope this info helps! – The Shell Rotella Team
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Thank you so much! I was actually planning on buying the 10w/30 or 15w/40 since I live in the hot desert area, in the next couple weeks when I do my oil change! Thanks again for the info!