The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Best oil for a 292 I-6 in a 1967 C50?

**DANTIP** · 09-29-2008, 03:41 PM

I believe Rotella (Oil intended for diesel engines) has 1,400 to 1,500 ppm zinc which is similar to pre-catalytic converter low-zinc oils. Good Luck!!

09-29-2008, 03:41 PM	#5
DANTIP Registered User Join Date: Sep 2001 Location: Fort Wayne, Indiana, USA Posts: 1,890	Re: Best oil for a 292 I-6 in a 1967 C50? I believe Rotella (Oil intended for diesel engines) has 1,400 to 1,500 ppm zinc which is similar to pre-catalytic converter low-zinc oils. Good Luck!!